Gem Diamonds Limited

Share Issue/Capital Change • Oct 21, 2025

National Storage Mechanism | Additional information

RNS Number : 0284E

Gem Diamonds Limited

21 October 2025

21 October 2025

GEM DIAMONDS LIMITED

("Gem Diamonds" or "the Company")

BLOCK LISTING SIX MONTHLY RETURN

Pursuant to Listing Rule UKLR 20.6.6, Gem Diamonds Limited makes the following update on its block listing:

Name of applicant:	Gem Diamonds Limited
Name of scheme:	Gem Diamonds Employee Share Plan 2007
Period of return	From 21 April 2025 to 20 October 2025
Balance of unallotted securities under scheme(s) from previous return:	137,887
Plus:   The amount by which the block scheme(s) has been increased since the date of the last return (if any increase has been applied for):	Nil
Less:   Number of securities issued/allotted under scheme(s) during period (see UKLR20.6.7G):	Nil
Equals:   Balance under scheme(s) not yet issued/allotted at end of period:	137,887

The Gem Diamonds Limited LEI number is 213800RC2PGGMZQG8L67

For further information:

Gem Diamonds

Kiki Constantopoulos, Company Secretary

[email protected]

Celicourt Communications

Mark Antelme / Charles Denley-Myerson

Tel:  +44 (0) 207 777 6424

About Gem Diamonds:

Gem Diamonds is a leading global diamond producer of high value diamonds. The Company owns 70% of the Letšeng mine in Lesotho. The Letšeng mine is famous for the production of large, top colour, exceptional white diamonds, making it the highest dollar per carat kimberlite diamond mine in the world.   www.gemdiamonds.com

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