Gem Diamonds Limited — Proxy Solicitation & Information Statement 2026

Apr 24, 2026

GEM DIAMONDS

NOTICE OF ANNUAL GENERAL MEETING

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NOTICE OF ANNUAL GENERAL MEETING

THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION

If you are in any doubt as to any aspect of the proposals referred to in this document or as to the action you should take, you should consult your stockbroker, bank manager, solicitor, accountant or other professional adviser authorised under the Financial Services and Markets Act 2000 immediately.

If you have sold or otherwise transferred all of your shares or depository interests, please send this document, together with the accompanying documents, at once to the purchaser or transferee, or to the stockbroker, bank or other agent through whom the sale or transfer was effected for transmission to the purchaser or transferee.

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GEM DIAMONDS

(Incorporated in the British Virgin Islands with registered number 669758)

NOTICE OF ANNUAL GENERAL MEETING

TO BE HELD ON WEDNESDAY, 3 JUNE 2026 AT 10:00 AM

AT MUFG CORPORATE MARKETS, 51 LIME STREET, LONDON, EC3M 7DQ.

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Notice of the 2026 Annual General Meeting of Gem Diamonds Limited to be held at MUFG Corporate Markets, 51 Lime Street, London, EC3M 7DQ at 10:00 am on Wednesday, 3 June 2026, is set out on page 3 of this document.

You will not receive a form of proxy or form of direction for the Annual General Meeting in the post. Details on how you can vote are included under the 'Important notes' on page 5 of this document.

All references to dates and times are to London dates and times, unless stated otherwise.

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Gem Diamonds Limited Notice of Annual General Meeting 2026

Gem Diamonds Limited

(Gem Diamonds or the Company)

(Incorporated in the British Virgin Islands with registered number 669758)

Registered office

2nd Floor, Coastal Building

Wickhams Cay II

P.O. Box 2221

Road Town

Tortola

British Virgin Islands

24 April 2026

To the shareholders and holders of depository interests of Gem Diamonds Limited

Notice of Annual General Meeting 2026

Dear shareholder,

The 19th Annual General Meeting (AGM) of Gem Diamonds will be held on Wednesday, 3 June 2026 at 10:00 am at MUFG Corporate Markets, 51 Lime Street, London, EC3M 7DQ.

Voting on all resolutions at the AGM will be conducted by poll vote. Proxy votes should be submitted as early as possible and, in any event, no later than 48 hours before the start of the AGM (excluding weekends and public holidays). Lodging a proxy form does not preclude a member from attending and voting at the AGM in person. Members who are unable to attend the AGM are strongly encouraged to appoint the 'Chairman of the meeting' as their proxy to ensure their votes are included in the poll vote conducted on all resolutions. Please follow the instructions under the 'Important notes' on page 5 on how to submit your vote.

Despite facing considerable difficulties this year, our focus on effective leadership and resilience helped us overcome the sustained decline in the diamond market. This approach has positioned us well for continued growth and stability in the years ahead. The efficacy of our governance processes and policies, together with the Company's culture and values, have proved to be a solid foundation for the Board's decision-making ability. During 2025, we fully complied with all provisions of the UK Corporate Governance Code 2024, except for Provision 29 which becomes effective in 2026. In addition we have made voluntary disclosures in relation to the Companies (Miscellaneous Reporting) Regulations 2018.

At the 2025 AGM, all resolutions were passed, with the lowest vote for a resolution being 93% votes in favour. The requirement of Provision 4 of the UK Corporate Governance Code, to engage with shareholders post the AGM should any resolution not achieve a minimum of 80% votes in favour, was therefore not necessary. The Board however continues to engage with its largest shareholders on material matters.

The Directors' Remuneration Policy as set out in the 2025 Annual Report was approved at the 2024 AGM. The Policy will apply again in 2026.

As previously announced by the Company, I will be standing down from the Board at the AGM following nine years of service. It has been an enormous privilege to lead Gem Diamonds during a period of profound change for both the Company and the wider diamond industry, and I would like to thank everyone who supported me during my tenure. I wish the Group, its employees and its shareholders every success in the future.

In considering the succession to the role of Chairman, the Nomination Committee carefully assessed the leadership requirements and size of the Board in the context of the current environment in which the Company operates. The Board recognises that the Company is navigating through a complex and demanding period, requiring strong governance oversight, a deep understanding of the Company's operational context, and continuity of leadership at Board level.

The Board will formally appoint Mike Brown as Chairman with effect from the conclusion of the AGM, subject to the passing of the requisite resolution to re-appoint him as a director. Since joining the Board in 2018, Mike has developed a detailed understanding of the Company's business, strategic priorities and the challenges facing the industry. Through his service on the Board, he has also gained valuable insight into the historical and future operational aspects at Letšeng.

The Board believes that this knowledge and experience will be particularly important as the Company enters its next phase which involves a number of operational, financial and strategic complexities. In these circumstances, the Board considers that appointing a Chairman with established familiarity with the Company's operations, stakeholder environment and strategic challenges will support stability and effective oversight during this critical period.

At the same time, Mike has demonstrated independence of judgement and a constructive approach to Board leadership throughout his tenure as a non-Executive Director. The Board is therefore confident that he will continue to uphold the high standards of governance expected of the role of Chairman.

The Board believes that this appointment provides an appropriate balance between continuity, independence and effective governance during a period of heightened complexity for the Company.

As set out on page 3 of this document, all the Directors will be retiring at the AGM and, other than myself, will be offering themselves for re-election. The Board is of the view that each of the Directors being proposed for re-election continue to be effective in their role, is committed to making available the appropriate time for Board meetings and other duties, has been and continues to be, important to the Company's long-term sustainable success. Biographies of each of the Directors can be found on pages 9 to 11 of this document.

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At this year's AGM, the Board is seeking to renew shareholder authority for the Company to purchase its own shares which it intends to hold in treasury, and is proposed as it enables the Directors to optimally manage the Company's capital for the benefit of both the Company and shareholders, and reflects UK-listed market practice. Shares held in treasury may be cancelled immediately, held for an indefinite period, sold for cash consideration or used to fulfil obligations under one or more of the Company's equity incentive schemes.

This document includes the formal Notice of the Annual General Meeting on page 3 in which we have set out the resolutions that shareholders are being asked to vote on. Resolutions 1 to 10 are ordinary resolutions, the majority of which relate to standard business matters. Resolution 11 is a special resolution.

An explanation of the business to be conducted at the meeting is included on pages 7 to 8 of this document.

The Board considers that the proposals described in this document are in the best interests of the Company, its shareholders and holders of depository interests as a whole, and the Board unanimously recommends that shareholders and holders of depository interests vote in favour of the resolutions. Those Directors who hold ordinary shares in the Company each intend to vote their shares in favour of the resolutions to be proposed at the AGM (other than in respect of their own re-election as a Director).

I would also encourage shareholders and holders of depository interests to exercise their right to vote on the business of the meeting in the following ways:

• you will not receive a hard copy proxy form for the AGM in the post unless you request one. You can instead submit your proxy vote electronically via the Investor Centre app or by accessing the web browser at https://uk.investorcentre.mpms.mufg.com/. If you have not previously registered to use the Investor Centre you will require your investor code (IVC) which can be found on your share certificate. Proxy votes should be submitted as early as possible and, in any event, no later than 48 hours before the start of the meeting (excluding weekends and public holidays), i.e. by 10:00 am on 1 June 2026 or, if the meeting is adjourned, 48 hours before the time fixed for the adjourned meeting (as the case may be). Lodging a proxy vote does not preclude a member from attending and voting at the meeting in person. Members who are unable to attend are strongly encouraged to appoint the 'Chairman of the meeting' as their proxy to ensure their votes are included in the poll vote conducted on all resolutions. You may request a hard copy proxy form directly from the Registrars, by email at shareholderenquiries@cm.mpms.mufg.com, by telephone on +44 (0) 371 664 0391 or by post at MUFG Corporate Markets, PXS 1, Central Square, 29 Wellington Street, Leeds, LS1 4DL. Calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom will be charged at the applicable international rate. MUFG Corporate Markets is open between 09:00 - 17:30, Monday to Friday excluding public holidays in England and Wales; and

• depository interest holders may instruct the depository on how to vote by using the CREST electronic voting service. To instruct the depository on how to vote on or amend an instruction to vote via the CREST system, the CREST message must be received by MUFG Corporate Markets (CREST ID RA10) by 10:00 am on 29 May 2026 or 72 hours before any adjourned AGM. For this purpose, the time of receipt will be taken to be the time (as determined by the time stamp applied to the message by the CREST Applications Host) from which the Company's agent is able to retrieve the message. CREST personal members or other CREST sponsored members, and those CREST members who have appointed voting service provider(s), should contact their CREST sponsor or voting service provider(s) for assistance. For further information on CREST procedures, limitations and system timings please refer to the CREST manual.

We have announced our results for the year ended 31 December 2025, the details of which can be found in our 2025 Annual Report online at www.gemdiamonds.com.

The AGM provides shareholders with an opportunity to engage with, and to ask questions of, the Board. My fellow directors and I hope you can take this opportunity, and we all look forward to meeting any shareholders who can attend on 3 June.

Yours sincerely,

Harry Kenyon-Slaney

Chairman

24 April 2026

Gem Diamonds Limited Notice of Annual General Meeting 2026

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Notice of Annual General Meeting

Notice is hereby given that the 19th AGM of Gem Diamonds Limited will be held on Wednesday, 3 June 2026 at 10:00 am at MUFG Corporate Markets, 51 Lime Street, London, EC3M 7DQ, to consider and, if thought fit, pass the following resolutions:

Resolutions 1 to 10 will be proposed as ordinary resolutions and resolution 11 will be proposed as a special resolution.

Ordinary resolutions

Company Accounts and Reports of the Directors and Auditors

1. THAT the Audited Accounts of the Company for the year ended 31 December 2025, together with the Directors' Report and the Auditors' Report thereon, be received.

Directors' Remuneration Report

1. THAT the Directors' Remuneration Report, including the Annual Report on Remuneration and the Remuneration Committee Chairperson's statement, as included in the Annual Report on pages 74 to 75 and pages 83 to 94 for the year ended 31 December 2025, be approved.

Reappointment of the Auditor

1. THAT RSM UK Audit LLP be reappointed as the Auditor of the Company (the 'Auditor'), to hold office until the conclusion of the next general meeting of the Company at which accounts are laid before the Company.

Remuneration of the Auditor

1. THAT the Directors be authorised to set the remuneration of the Auditor.

Re-election of Directors

1. THAT Mr Mike Brown be re-elected as a Director.
2. THAT Ms Rosalind Kainyah be re-elected as a Director.
3. THAT Ms Janet Blas be re-elected as a Director.
4. THAT Mr Clifford Elphick be re-elected as a Director.
5. THAT Mr Michael Michael be re-elected as a Director.

Authority to allot shares

1. THAT, in substitution for any existing authority to allot relevant equity securities, which is hereby revoked, but without prejudice to any allotment of securities made pursuant thereto, the Directors be and are hereby generally and unconditionally authorised for the purposes of Article 3.1 of the Company's Articles of Association to exercise all the powers of the Company to allot shares in the Company or to grant rights to subscribe for, or to convert, any security into shares in the Company up to an aggregate nominal amount of US$466 593 (representing an amount equal to 33.33% of the Company's issued share capital as at 17 April 2026 (the 'Allotment Amount')) during the period commencing on the date of the passing of this ordinary resolution and expiring at the conclusion of the next AGM of the Company, or, if earlier, at the close of business on 30 June 2027 (the 'Allotment Period'), save that the Directors may, before the expiry of such Allotment Period, make offers and enter into agreements which would or might require relevant equity securities to be allotted or rights to be subscribed for or to convert any security into shares to be granted after such expiry and, notwithstanding such expiry, the Directors may allot relevant equity securities in pursuance of such offers or agreements.

Gem Diamonds Limited Notice of Annual General Meeting 2026

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Special resolution

Authority to purchase own shares

1. THAT the Company be and is hereby generally and unconditionally authorized for the purposes of Article 10.1 of the Company's Articles of Association to purchase, redeem or otherwise acquire ordinary shares in the Company, in such manner and upon such terms as the Directors may determine during the period commencing on the date of the passing of this special resolution and expiring at the conclusion of the next Annual General Meeting of the Company held in 2027 or, if earlier, at the close of business on 30 June 2027, unless revoked, renewed or varied during that period, provided that:

a. the maximum aggregate number of ordinary shares authorized to be purchased is 13 997 796 (representing an amount equal to 10% of the Company's issued share capital as at 17 April 2026);
b. the minimum price which may be paid for an ordinary share is US$0.01 per share;
c. the maximum price which may be paid for a share is the higher of:

i. 105% of the average closing price of the Company's ordinary shares as derived from the London Stock Exchange Daily Official List during the five business days immediately prior to the date on which such shares are contracted to be purchased; and
ii. an amount equal to the higher of the price of the last independent trade of a share and the highest current independent bid; and

d. this authority shall allow the Company to purchase shares after the expiry of this authority under any agreement concluded before the expiry of this authority which might be executed wholly or partly after such expiry, as if the authority hereby conferred had not expired.

By order of the Board

Kiki Constantopoulos
Company Secretary

24 April 2026

Registered office
2nd Floor, Coastal Building
Wickhams Cay II
P.O. Box 2221
Road Town
Tortola
British Virgin Islands
(Incorporated in the British Virgin Islands with registered number 669758)

London office
2 Eaton Gate
London
SW1W 9BJ
United Kingdom

Gem Diamonds Limited Notice of Annual General Meeting 2026

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Important notes

The following notes explain the general rights of shareholders and holders of depository interests and the rights to attend and vote at the AGM or to appoint someone else to vote on their behalf.

Holders of ordinary shares

1. A member entitled to attend and vote at the meeting may appoint one or more proxies to exercise all or any of the member's rights to attend, speak and vote at the meeting. A proxy need not be a member of the Company. Lodging a form of proxy does not preclude a member from attending and voting at the meeting. Members who are unable to attend are strongly encouraged to appoint the 'Chairman of the meeting' as their proxy to ensure their votes are included in the poll vote conducted on all resolutions. A shareholder may appoint the Chairman of the meeting to vote as per the shareholder's voting instructions, or at the Chairman's discretion as he shall see fit if the shareholder has expressly authorised the Chairman under the 'Discretion to Chairman' option in the voting instructions. If a member appoints more than one proxy, each proxy must be appointed to exercise the rights attached to a different share or shares held by the member. You may appoint more than one proxy in relation to the Annual General Meeting provided that each proxy is appointed to exercise the rights attached to a different share or shares held by you. To appoint more than one proxy, hard copy forms of proxy may be obtained by contacting the Registrar's helpline on +44 (0) 371 664 0391 or email at shareholderenquiries@cm.mpms.mufg.com. Calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom will be charged at the applicable international rate. MUFG Corporate Markets is open between 09:00 - 17:30, Monday to Friday excluding public holidays in England and Wales. Submission of a proxy vote shall not normally preclude a member from attending and voting in person at the meeting in respect of which the proxy is appointed or at any adjournment thereof.

2. Investor Centre is a free app for smartphones and tablets provided by MUFG Corporate Markets (the company's registrar). It allows you to securely manage and monitor your shareholdings in real time, take part in online voting, keep your details up to date, access a range of information including payment history and much more. The app is available to download on both the Apple App Store and Google Play, or by scanning the relevant QR code below. Alternatively, you may access the Investor Centre via a web browser at: https://uk.investorcentre.mpms.mufg.com/.

Download on the App Store

GET IT ON Google Play

1. To be effective, all proxy appointments must be received by the Company's Registrar, no less than 48 hours (excluding weekends and public holidays) before the time appointed for the meeting or any adjournment of it, i.e. by 10:00 am on 1 June 2026. Any power of attorney or other authority under which the proxy is submitted must be returned to the Company's Registrar, MUFG Corporate Markets at PXS 1, Central Square, 29 Wellington Street, Leeds, LS1 4DL. If you need help with voting online, or require a paper proxy form, please contact the Company's Registrar, MUFG Corporate Markets by email at shareholderenquiries@cm.mpms.mufg.com, or you may call MUFG Corporate Markets on +44 (0) 371 664 0391. Calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom will be charged at the applicable international rate. MUFG Corporate Markets is open between 09:00 - 17:30, Monday to Friday excluding public holidays in England and Wales.

2. Unless otherwise indicated on the Form of Proxy or any other electronic voting instruction, the proxy will vote as they think fit or, at their discretion, withhold from voting.

3. If a share is held by joint shareholders and more than one of the joint shareholders vote (including by way of proxy), the only vote that will count in respect of those joint shareholders is the vote of the person whose name is listed before the other joint shareholder(s) on the register.

4. Any person to whom this notice is sent, who is a person nominated under Article 147.5 of the Articles of Association to enjoy information rights (a nominated person), may, under an agreement between him or her and the shareholder by whom he or she was nominated, have a right to be appointed (or to have someone else appointed) as a proxy for the Annual General Meeting. If a nominated person has no such right to be appointed or does not wish to exercise it, he or she may, under any such agreement, have a right to give instructions to the shareholder as to the exercise of voting rights.

5. The statement of the rights of shareholders in relation to the appointment of proxies in notes 1 and 2 above does not apply to nominated persons. The rights described in these notes can only be exercised by shareholders of the Company.

6. Only those shareholders entered on the register as at the close of business on 1 June 2026 (or, if the AGM is adjourned, 48 hours before the time fixed for the adjourned meeting) will be entitled to vote at the Annual General Meeting in respect of the number of shares registered in their names at that time. In each case, changes to entries on the register after such time shall be disregarded in determining the rights of any person to attend or vote at the Annual General Meeting.

Gem Diamonds Limited Notice of Annual General Meeting 2026

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Gem Diamonds Limited Notice of Annual General Meeting 2026

Holders of depository interests

1. You will not receive a form of direction for the AGM in the post. Depository Interests may be voted through the CREST proxy voting service in accordance with the procedures set out in the CREST manual. To instruct MUFG Corporate Markets Trustees (Nominees) Limited, the depository, on how to vote on or amend an instruction to vote via the CREST system, the CREST message must be received by MUFG Corporate Markets (CREST ID RA10) by 10:00 am on 29 May 2026 or 72 hours before any adjourned AGM. For this purpose, the time of receipt will be taken to be the time (as determined by the time stamp applied to the message by the CREST Applications Host) from which the Company's agent is able to retrieve the message. CREST personal members or other CREST sponsored members, and those CREST members who have appointed voting service provider(s), should contact their CREST sponsor or voting service provider(s) for assistance. For further information on CREST procedures, limitations and system timings please refer to the CREST manual.

2. A form of direction may be requested and completed in order to instruct MUFG Corporate Markets Trustees (Nominees) Limited, the Depository, to vote on your behalf by proxy or, if the AGM is adjourned, at the adjourned meeting. If you need help with voting online, or require a paper form of direction, please contact our Registrar, MUFG Corporate Markets using the contact details below. To be effective, a valid form of direction (and any power of attorney or other authority under which it is signed) must be received electronically or delivered to MUFG Corporate Markets at PXS 1, Central Square, 29 Wellington Street, Leeds, LS1 4DL by no later than 10.00 am on 29 May 2026 or 72 hours before any adjourned AGM. You must be registered as holder of the Depository Interests as at close of business on 29 May 2026 (or 72 hours before any adjourned AGM) for your form of direction to be valid. Should you require any assistance in relation to your shareholding in Gem Diamonds Limited please contact MUFG Corporate Markets by email at shareholderenquiries@cm.mpms.mufg.com or on +44 (0) 371 664 0391. Calls are charged at the standard geographic rate and will vary by provider. Calls outside the United Kingdom will be charged at the applicable international rate. MUFG Corporate Markets is open between 09:00 - 17:30, Monday to Friday excluding public holidays in England and Wales.

3. To be effective, a valid form of direction (and any power of attorney or other authority under which it is signed) must be received electronically or delivered to MUFG Corporate Markets, PXS 1, Central Square, 29 Wellington Street, Leeds, LS1 4DL, by no later than 10:00 am on 29 May 2026 or 72 hours before any adjourned meeting. You must be registered as holder of the Depository Interests as at close of business on 29 May 2026 (or 72 hours before any adjourned AGM) for your form of direction to be valid.

4. The Depository will appoint the Chairman of the meeting as its proxy to cast its votes. The Chairman of the meeting may also vote or abstain from voting as he or she thinks fit on any other business (including amendments to resolutions) which may properly come before the meeting. The 'Vote Withheld' option is provided to enable you to abstain from voting on the resolutions. However, it should be noted that a 'Vote Withheld' is not a vote in law and will not be counted in the calculation of the proportion of the votes 'For' and 'Against' a resolution.

5. Depository interest holders wishing to attend the Annual General Meeting should contact the Depository at MUFG Corporate Markets Trustees (Nominees) Limited, Central Square, 29 Wellington Street, Leeds, LS1 4DL or by emailing Nominee.Enquiries@cm.mpms.mufg.com by no later than 10:00 am on 29 May 2026 or 72 hours before any adjourned AGM.

Corporate representatives

1. Any corporation which is a shareholder can appoint one or more corporate representatives who may exercise on its behalf all of its powers as a shareholder provided that they do not do so in relation to the same shares.

Before the meeting

1. Members should note that the doors to the AGM will be open at 9:00 am.

2. Mobile phones may not be used in the meeting hall, and cameras, tape or video recorders are not allowed in the meeting hall.

3. All shareholders, proxies and other in person attendees should also bring official photo ID (such as a driving license, national identity card or passport) to attend the AGM as he or she will be asked to show it to the reception team on arrival.

Questions

1. Any shareholder or holder of depository interests attending the meeting has the right to ask questions. The Company must cause to be answered any such question relating to the business being dealt with at the meeting, but no such answer need be given if (a) to do so would interfere unduly with the preparation of the meeting or involve the disclosure of confidential information, (b) the answer has already been given, or (c) it is undesirable in the interests of the Company or the good order of the meeting that the question be answered.

Website information

1. A copy of this notice can be found at www.gemdiamonds.com.

Voting rights and results

1. As at 17 April 2026 (being the last practicable date prior to the publication of this notice), the Company's issued shares consist of 139 977 960 ordinary shares, carrying one vote each. Therefore, the total voting rights in the Company as at 17 April 2026 are 139 977 960.¹

2. As soon as practicable following the AGM, the results of the voting at the AGM and the numbers of proxy votes cast for and against, and the number of votes actively withheld in respect of each of the resolutions will be announced via a Regulatory Information Service and will also be placed on the Company's website at www.gemdiamonds.com. A summary of the business transacted will also be available, on written request, from the Company Secretary at the Company's London office.

¹ Excludes 1 520 170 treasury shares.

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1. You may vote your shares electronically via the Investor Centre app or by accessing the web browser at https://uk.investorcentre.mpms.mufg.com/

2. Copies of the documents set out below are made available for inspection during normal business hours at the Company's London office from the date of this notice up to the date of the AGM and at the place of the AGM 15 minutes before the start of the meeting until the conclusion of the meeting:

a) All Directors' service contracts or letters of appointment; and
b) A copy of the Memorandum and Articles of Association (unchanged from last year).

Explanatory notes to the resolutions

The notes on the following pages give an explanation of the proposed resolutions.

Resolutions 1 to 10 are proposed as ordinary resolutions. This means that for each of those resolutions to be passed, more than 50% of the votes cast must be in favour of the resolution.

Resolution 11 is proposed as a special resolution. This means that for this resolution to be passed at least 75% of the votes cast must be in favour of the resolution.

Ordinary resolutions

Company Accounts and Reports of the Directors and Auditors (resolution 1)

The first item of business is the requirement for shareholders to receive the Company's Accounts and the Reports of the Directors and Auditors for the year ended 31 December 2025.

Directors' Remuneration Report (resolution 2)

Shareholders will be asked to approve the Annual Report on Remuneration found on pages 83 to 94 of the Annual Report for the year ended 31 December 2025, as well as the Remuneration Committee Chair's statement as included on pages 74 to 75 of the Annual Report (together, the 'Directors' Remuneration Report'). The approval of shareholders is requested in an advisory role only, in accordance with remuneration reporting rules. The Directors' Remuneration Report gives details of remuneration of the Directors for the year under review. The Auditor, RSM UK Audit LLP, has audited certain parts of the Directors' Remuneration Report and its report may be found on pages 100 to 104 of the Annual Report.

Reappointment of the Auditor (resolution 3)

The Company is required to appoint an auditor at each general meeting at which accounts are laid before the Company, to hold office until the conclusion of the next meeting. The Audit Committee has reviewed the effectiveness, independence and objectivity of the external auditor, RSM UK Audit LLP, on behalf of the Board, which now proposes the reappointment of RSM UK Audit LLP as auditor of the Company to hold office until the next meeting at which accounts are laid. RSM UK Audit LLP has indicated its willingness to continue in office. Accordingly, resolution 3 will, if passed, reappoint RSM UK Audit LLP as auditor to the Company.

Remuneration of the Auditor (resolution 4)

Resolution 4, if passed, authorises the Directors of the Company to set the remuneration of the Auditor as recommended by the Audit Committee.

Re-election of Directors (resolutions 5 to 9)

Under Article 82 of the Company's Articles of Association, each Director shall retire at the AGM held in the third calendar year following the year in which they were elected or last re-elected but, unless otherwise agreed, shall be eligible for re-election. Under Article 83 of the Company's Articles of Association, new Directors are only eligible for appointment if nominated by the Board.

In addition, as a company listed in the UK, the Board has agreed that in accordance with the UK Corporate Governance Code Provision 18, all Directors appointed at the time of the AGM will offer themselves for re-election.

The skills and experience of each Director, which can be found below and on pages 161 to 163 of the Annual Report, demonstrate why their contribution is, and continues to be, important to the Company's long-term sustainable success.

The Board recognises the importance of the Hampton-Alexander reviews and its objective to improve diversity in executive leadership and senior management. Further details on the framework for succession planning can be found in the Nominations Committee report on pages 63 to 65 of the 2025 Annual report on the Company's website at www.gemdiamonds.com.

Authority to allot shares (resolution 10)

The purpose of resolution 10 is to renew the Directors' authority to allot shares.

Under Article 3.1 of the Company's Articles of Association, the Directors may only allot relevant equity securities with the authority of the shareholders in a general meeting. Relevant equity securities as defined in the Company's Articles of Association include the Company's shares. This ordinary resolution would provide that authority and allow the Directors flexibility to act in the best interests of shareholders, when opportunities arise, by issuing new shares.

Resolution 10 will, if passed, authorise the Directors to allot relevant equity securities up to an aggregate nominal amount of US$466 593. This represents 33.33% of the Company's total issued share capital as at 17 April 2026 and reflects the Investment Association (IA) guidance limit of one-third of the Company's issued ordinary share capital. As at 17 April 2026, 1 520 170 treasury shares are held by the Company. If the resolution is passed, this authority will expire on the Company's next AGM in 2027 or, if earlier, at the close of business on 30 June 2027.

Gem Diamonds Limited Notice of Annual General Meeting 2026

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The Directors do not currently intend to exercise this authority other than in relation to satisfying obligations under the Company's employee share arrangements.

Special resolution

Authority to purchase own shares (resolution 11)

Article 10.1 of the Company's Articles of Association gives a general authority to the Company to purchase its own shares, but that authority is subject to the approval of shareholders. The Directors believe that granting such approval would be in the best interests of shareholders in allowing them the flexibility to react promptly to circumstances requiring market purchases.

Accordingly, resolution 11, which will be proposed as a special resolution, will, if passed, renew the Directors' authority to make one or more market purchases of the Company's shares. The authority contained in this resolution will be limited to a maximum of 13 997 796 ordinary shares having an aggregate nominal value of US$139 978, which represents 10% of the issued ordinary share capital of the Company as at 17 April 2026. The Company's exercise of this authority is subject to the stated upper and lower limits on the price which may be paid for those shares as set out in this resolution. This authority will expire at the Company's next Annual General Meeting in 2027 or at the close of business on 30 June 2027, whichever is earlier.

Shares purchased under this authority may be held as treasury shares. The Company may purchase and hold shares as treasury shares up to a maximum amount equal to 50% of the nominal value of the issued ordinary shares at the date of purchase, rather than cancelling them. Shares held in treasury in this way can be sold for cash or cancelled, either immediately or at a point in the future, or used for the purposes of the Company's employee share schemes. The Directors believe that it is desirable for the Company to have this choice and therefore intends to hold any shares purchased under this authority as treasury shares. This would allow the Company additional flexibility in the management of its capital base.

Shares will only be repurchased for the purposes of employee share schemes, or if the Directors consider such purchases to be in the best interests of shareholders generally and that they can be expected to result in an increase in earnings per share. The authority will only be used after careful consideration, taking into account market conditions prevailing at the time, other investment opportunities, appropriate gearing levels and the overall financial position of the Company. Shares held as treasury shares will not automatically be cancelled and will not be taken into account in future calculations of earnings per share (unless they are subsequently resold or transferred out of treasury).

As at 17 April 2026 (being the latest practicable date prior to the publication of this notice), there were 7 179 005 outstanding options granted under all share option schemes operated by the Company and no outstanding warrants. If exercised, the outstanding options would represent 5.13% of the current issued share capital of the Company (excluding any shares held in treasury). If this authority granted under resolution 11 were exercised in full, that percentage would increase to 5.70%.

Gem Diamonds Limited Notice of Annual General Meeting 2026

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The biographical details of each of the Directors retiring at the AGM who wish to seek re-election, are as follows:

Non-executive directors

Mike Brown (65)

NON-EXECUTIVE CHAIRMAN (effective 3 June 2026)

B.Sc. Eng (Mining) (University of Witwatersrand); PR. Eng (ECSA); Strategic Executive Programme (London Business School)

Appointed

Mike was appointed to the Gem Diamonds Board in January 2018.

Key skills and experience

Mike has over 40 years' experience in the resources industry in operational, senior management and director roles. He spent six years in Switzerland as the Managing Director technical at Pala, where he oversaw all technical aspects of the mining sector investments, including the risks associated with resource performance, project management, ramp-up, operations, and the associated working capital and financial controls. Prior to joining Pala, Mike spent 21 years with De Beers in southern Africa in various roles, culminating in the post of chief operating officer where he was accountable for five operating mines, including greenfield and brownfield growth projects. He also managed the restructuring at De Beers Consolidated Mines in 2005/2006 and again in 2009. Mike has overseen growth projects and building of mines in Namibia, South Africa, Sierra Leone, Vietnam and USA.

Current external appointments

Mike is a managing partner at Palaris, a privately held mining advisory company.

Board Committee membership (effective 3 June 2026)

Chairperson of the Sustainability and Nomination Committees and member of the Audit Committee.

Rosalind Kainyah MBE (68)

SENIOR INDEPENDENT DIRECTOR

BA (Hons) English (University of Ghana); LLB (Hons) (University of London); LLM (University College London), Member of the Bar of England & Wales (Gray's Inn)

Appointed

Rosalind was appointed to the Gem Diamonds Board in May 2021.

Key skills and experience

Rosalind is a trusted adviser to Boards and Senior Executives on sustainability and responsible business. She trained as a lawyer and is a member of the Bar of England and Wales and of the Chartered Institute of Arbitrators. Rosalind has almost 30 years of combined international, senior management, executive and board level experience. She has worked with companies and organisations including Linklaters, Anglo American Corporation of South Africa, De Beers, Tullow Oil plc, the United Nations Environment Programme and ERM, and on projects across Africa, in the UK, Europe, North and South America, Asia, and the South Pacific. As a result, she has a wide network and is respected across a range of stakeholders from governments and corporates through civil society organisations and media for her professional expertise and as a woman of integrity and credibility.

Current external appointments

Rosalind is currently a non-Executive Director for discoverIE plc, EnQuest plc and of two private companies.

Board Committee membership (effective 3 June 2026)

Chairperson of the Remuneration Committee and member of the Nomination, Sustainability and Audit Committees.

Gem Diamonds Limited Notice of Annual General Meeting 2026

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Janet Blas (44)

NON-EXECUTIVE DIRECTOR

Bachelor of Science in Accountancy, University of Santo Tomas (UST); Certified Public Accountant

Appointed

Janet was appointed to the Gem Diamonds Board from 1 April 2025.

Key skills and experience

Janet is an accomplished professional with extensive experience in the finance, gemstone and mining industries. She holds a Certified Public Accountant qualification, complemented by a BSc in Accountancy. Janet began her career with PwC, building a solid technical foundation in financial management and audit practices. She has established herself as an effective Audit & Risk Committee Chair, demonstrating a deep understanding of governance practices in both listed and privately held mining companies.

Currently, Janet is the Chief Financial Officer and Executive Director of Bacanora Lithium Limited. Her previous tenure as Chief Financial Officer at Gemfields Group has provided her with a comprehensive understanding of the complexities and strategic demands of the precious minerals sector. She also held a number of senior positions with ENRC Plc, including a key role in ENRC's initial public offering on the Main Market of the London Stock Exchange when the company joined the FTSE 100 index. Previously, Janet was part of the Audit and Assurance Services Team at Ernst & Young LLP in London and PWC in the Philippines.

Janet is recognized for her strong board governance experience, consistently implementing effective financial oversight structures. Her career has predominantly focused on the mining industry, where she has developed in-depth sector expertise across various commodities and established a proven track record leading teams across multiple jurisdictions. Additionally, she has been actively involved in integrating ESG principles into operations, emphasizing ethical mining practices, transparency, and community engagement.

Current external appointments

Janet holds non-executive board roles with Sedibelo Resources Limited and Cornish Lithium Limited, alongside her executive position as Chief Financial Officer and Director of Bacanora Lithium Limited. All these companies are privately held.

Board Committee membership (effective 3 June 2026)

Chairperson of the Audit Committee and a member of the Remuneration Committee.

All non-Executive Directors are classed as 'independent' under Provision 10 of the UK Corporate Governance Code 2024.

Gem Diamonds Limited Notice of Annual General Meeting 2026

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Executive directors

Clifford Elphick (65)

CHIEF EXECUTIVE OFFICER

BCom (University of Cape Town); BCompt Hons (University of South Africa)

Appointed

Clifford formed Gem Diamonds in July 2005.

Key skills and experience

Clifford joined Anglo American Corporation in 1986 and was seconded to E Oppenheimer & Son Proprietary Limited as Harry Oppenheimer’s personal assistant in 1988. In 1990, he was appointed as Managing Director of E Oppenheimer & Son, a position he held until leaving in December 2004. During that time, Clifford was also a Director of Central Holdings, Anglo American and DB Investments. Following the privatisation of De Beers in 2000, Clifford served on the De Beers Executive Committee.

Current external appointments

Clifford is currently the non-Executive Chairman of Zanaga Iron Ore Co. Limited

Michael Michael (55)

CHIEF FINANCIAL OFFICER

BCom Hons (Rand Afrikaans University); CA(SA)

Appointed

Michael joined Gem Diamonds in March 2008 and was appointed to the Board in April 2013.

Key skills and experience

Michael possesses considerable expertise in the field of finance. His professional background reflects a comprehensive understanding of complex financial principles, practices, and regulations. He joined the audit firm RSM Betty & Dickson in Johannesburg, South Africa in January 1993 and became audit partner at the firm in March 2000. From August 2006 to February 2008 Michael was seconded to Gem Diamonds to assist with the financial aspects of the Main London Listing including the financial reporting, management accounting and tax relating to the initial public offering. In March 2008 Michael joined Gem Diamonds on a full-time basis and on 2 April 2013 he was promoted to the position of Chief Financial Officer.

Michael holds no external appointments.

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GEM DIAMONDS

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Wickhams Cay II, PO Box 2221, Road Town,
Tortola, British Virgin Islands,
Registration number: 669758

GEM DIAMONDS LIMITED
www.gemdiamonds.com