Notification of Half Year 2025 Results

28 August 2025

GEM DIAMONDS LIMITED

("Gem Diamonds" or "the Company")

Notification of Half Year 2025 Results

Gem Diamonds Limited (LSE: GEMD) will be releasing its Half Year Results for the six months ended 30 June 2025 on Thursday, 4 September 2025.

The Company will host a results presentation webcast on Thursday, 4 September 2025 at 09:30 BST. To attend the webcast, please register using the following link: https://gemdiamonds.zoom.us/webinar/register/WN_50gMcwzXTmOr37OU3-ARkQ.

A recording of the webcast will also be available on the Company's website at: https://www.gemdiamonds.com/results-reports-presentations.php.

The Gem Diamonds Limited LEI number is 213800RC2PGGMZQG8L67.

For further information:

Gem Diamonds

Kiki Constantopoulos, Company Secretary

ir@gemdiamonds.com

Celicourt Communications

Mark Antelme / Felicity Winkles

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