Notification of Q1 2026 Trading Update

13 May 2026

GEM DIAMONDS LIMITED

("Gem Diamonds" or "the Company")

Notification of Q1 2026 Trading Update

Gem Diamonds Limited (LSE: GEMD) will be releasing a Trading Update on 20 May 2026 for the period 1 January 2026 to 31 March 2026.

The Gem Diamonds Limited LEI number is 213800RC2PGGMZQG8L67.

For further information:

Gem Diamonds

Kiki Constantopoulos, Company Secretary

ir@gemdiamonds.com

Celicourt Communications

Mark Antelme / Charles Denley-Myerson

Tel: +44 (0) 207 777 6424 

About Gem Diamonds:

Gem Diamonds is a leading global 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, exceptional white

diamonds, making it the highest dollar per carat kimberlite diamond mine in the world.

www.gemdiamonds.com