Incorporated in Guernsey. Guernsey registration Number: 47656. South African external company registration number 2009/012636/10 Share code on JSE:GML / AIM:GEM ISIN: GG00BG0KTL52 | LEI: 21380017GAVXTCYS5R31 ("Gemfields" or the "Company") Transaction in Own Shares and Total Voting Rights LONDON, 4 OCTOBER 2023 Gemfields announces that on Tuesday 3 October 2023, the Company purchased 245,366 of its own ordinary shares of USD0.00001 each in the Company ("Ordinary Shares") at an average price of ZAR3.1450. These Ordinary Shares will be held as treasury shares before being periodically cancelled. Any cancellations will be announced separately. Date of purchase: 3 October 2023 Number of ordinary shares purchased: 245,366 Highest price paid per share: ZAR3.15 Lowest price paid per share: ZAR3.04 Volume weighted average price paid per share: ZAR3.1450 A list of all trades completed can be found at the bottom of this announcement. Following this purchase, the total number of Ordinary Shares held in treasury by the Company is 8,615,798. The total number of Ordinary Shares in issue is 1,221,918,104, including treasury shares. Therefore, the number of Ordinary Shares that carry the right to one vote is 1,213,302,306. This is the total voting rights figure which may be used by shareholders as the denominator for the calculations by which they can determine whether they are required to notify their interests in, or a change to their interest in, the Company under the FCA’s Disclosure Guidance and Transparency Rules. Gemfields Group Limited, Royal Chambers, St Julian’s Avenue, St Peter Port, GY1 4HP, Guernsey T +44 (0)1481 731 554 gemfieldsgroup.com Number of Transaction Transaction date and time shares Trading venue price (ZAR) repurchased 3 October 2023, 13:30 SA time 7,330 3.04 JSE 3 October 2023, 13:30 SA time 2,000 3.05 JSE 3 October 2023, 14:45 SA time 9,177 3.13 JSE 3 October 2023, 14:45 SA time 2,204 3.13 JSE 3 October 2023, 14:45 SA time 25,000 3.15 JSE 3 October 2023, 14:45 SA time 2,686 3.15 JSE 3 October 2023, 14:45 SA time 7,314 3.15 JSE 3 October 2023, 14:45 SA time 891 3.15 JSE 3 October 2023, 14:49 SA time 1,120 3.15 JSE 3 October 2023, 14:56 SA time 8,136 3.15 JSE 3 October 2023, 14:56 SA time 16,864 3.15 JSE 3 October 2023, 14:56 SA time 5,628 3.15 JSE 3 October 2023, 15:00 SA time 3,274 3.15 JSE 3 October 2023, 15:00 SA time 46,726 3.15 JSE 3 October 2023, 15:00 SA time 8,908 3.15 JSE 3 October 2023, 15:00 SA time 2,360 3.15 JSE 3 October 2023, 15:09 SA time 6,537 3.15 JSE 3 October 2023, 15:09 SA time 43,463 3.15 JSE 3 October 2023, 15:09 SA time 9,687 3.15 JSE 3 October 2023, 15:40 SA time 8,240 3.15 JSE 3 October 2023, 15:40 SA time 16,760 3.15 JSE 3 October 2023, 15:40 SA time 5,686 3.15 JSE 3 October 2023, 16:45 SA time 2,900 3.15 JSE 3 October 2023, 16:45 SA time 1,486 3.15 JSE 3 October 2023, 16:45 SA time 988 3.15 JSE 3 October 2023, 17:00 SA time 1 3.15 JSE -ENDS- Further information on Gemfields Group Limited can be found at: GEMFIELDSGROUP.COM To join our investor mailing list, contact us on: ir@gemfields.com For any press enquiries please contact us on: gemfields@camarco.co.uk Gemfields Group Limited Page 2 of 4 ENQUIRIES GEMFIELDS Sean Gilbertson / David Lovett / Ian Hughes ir@gemfields.com T: +44(0) 20 7518 3400 SPONSOR (JSE) Investec Bank Limited NOMINATED ADVISER Cavendish Capital Markets Limited (AIM) & JOINT BROKER Neil McDonald / Edward Whiley / Tim Redfern T: +44(0) 20 7220 0500 JOINT BROKER Liberum Scott Mathieson / Kane Collings T: +44(0) 20 3100 2222 FINANCIAL PR/ IR Camarco Gordon Poole / Emily Hall T: +44(0) 20 3757 4980 ADDITIONAL INFORMATION ON GEMFIELDS Gemfields is a world-leading responsible miner and marketer of coloured gemstones. Gemfields is the operator and 75% owner of both the Kagem emerald mine in Zambia (believed to be the world’s single largest producing emerald mine) and the Montepuez ruby mine in Mozambique (one of the most significant recently discovered ruby deposits in the world). In addition, Gemfields also holds controlling interests in various other gemstone mining and prospecting licences in Zambia, Mozambique, Ethiopia and Madagascar. Gemfields’ outright ownership of Fabergé - an iconic and prestigious brand of exceptional heritage - enables Gemfields to optimise positioning, perception and consumer awareness of coloured gemstones through Fabergé designs, advancing the wider group’s “mine and market” vision. Gemfields has developed a proprietary grading system and a pioneering auction platform to provide a consistent supply of coloured gemstones to downstream markets, a key component of Gemfields Group Limited Page 3 of 4 Gemfields’ business model that has played an important role in the growth of the global coloured gemstone sector. GEMFIELDS GEMFIELDS.COM | INVESTORS |FOUNDATION INSTAGRAM | FACEBOOK | TWITTER | YOUTUBE FABERGÉ FABERGÉ.COM | INSTAGRAM | FACEBOOK | TWITTER | YOUTUBE KAGEM MINING LINKEDIN MONTEPUEZ RUBY MINING LINKEDIN Gemfields Group Limited Page 4 of 4