Block listing application

5 March 2019

GEM DIAMONDS LIMITED

("Gem Diamonds" or "the Company")

 Block listing application

Gem Diamonds, LSE: GEMD announces that it has made applications to The Financial Conduct Authority and The London Stock Exchange for a block listing of 350,000 ordinary shares of $0.01 each in the Company. These shares when issued pursuant to the Company's obligations under the Gem Diamonds Long Term Incentive Plan 2007, shall rank equally with the existing issued shares of the Company and will be admitted to the Official List and to trading on the main market of The London Stock Exchange. It is expected that admission will become effective on or around 8 March 2019.

The application for the block listing is being made to satisfy options granted under the Gem Diamonds Long Term Incentive Plan 2007.

The Gem Diamonds Limited LEI number is 213800RC2PGGMZQG8L67.

For further information:

Gem DiamondsSusan Wallace, Company Secretarial department

ir@gemdiamonds.com

Celicourt Communications

Mark Antelme/Jimmy Lea

Tel: +44 (0) 207 520 9261

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 and 100% of the Ghaghoo mine in Botswana. 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