September 18, 2017

Corporate Presentation Update

18 September 2017

AIM: STEL

Stellar Diamonds plc

(“Stellar” or the “Company”)

Corporate Presentation Update

Stellar Diamonds plc (AIM: STEL) the London-listed diamond development company focused on Western Africa, advises that the Company has updated its presentation on the 4.5 million carat Tongo-Tonguma mine development project in Sierra Leone. This presentation can be found on the Company’s website http://stellar-diamonds.com/investors/presentations.

**ENDS**

For further information contact the following or visit the Company’s website.

Karl Smithson, CEO

Philip Knowles, CFO

Stellar Diamonds plc

Stellar Diamonds plc

Tel: +44 (0) 20 7164 6371

Tel: +44 (0) 20 7164 6371

Emma Earl

Sandy Jamieson

Cairn Financial Advisers (Nominated Adviser) Tel: +44 (0) 20 7213 0880
Jon Bellis Beaufort Securities Limited (Joint Broker) Tel: +44 (0) 20 7382 8300
Martin Lampshire

Rory Scott

Peterhouse Corporate Finance (Joint Broker)

Mirabaud Securities (Financial Advisers)

Tel: +44 (0) 20 7469 0930

Tel: +44 (0) 20 7878 3360

Tim Blythe

Nick Elwes

Blytheweigh

(Financial PR)

Tel: +44 (0) 20 7138 3204

About Stellar Diamonds plc

Stellar is an AIM listed (AIM: STEL) diamond development company focused on the 4.5 million carat high-grade and high value Tongo-Tonguma kimberlite diamond project in the world famous diamond fields of eastern Sierra Leone. An independently generated mine plan, based on over 66,000m of drilling that has been completed to date, envisages the production of over 4 million carats, generating gross revenues of more than US$1.5 billion, over a 21 year life of mine. Initial production at Tongo-Tonguma is scheduled to occur in the first year of development, building up to over 200,000 carats per annum, with a weighted average modelled diamond value of $239 per carat. The Tongo-Tonguma kimberlites have the potential to be the highest dollar per tonne of any kimberlites in Africa yielding a Post-tax NPV(8) of US$104 million attributable to Stellar and an IRR of 31%.