Stellar Diamonds Enhances Bulk Sample Grade at Tongo

Stellar Diamonds plc (LSE:STEL) announced that the reprocessing of bulk sample tailings at its Sierra Leone-based Tongo kimberlite dyke project has “yielded additional diamonds and increased the average grade to 155 carats per hundred tonnes.”

Highlights include:

• 29% increase in undiluted diamond grade to 155cpht from 120cpht
• Processing to date has now yielded 843 carats
• High diamond quality with modelled value of $248/ct for an in-situ ore value of $384 / tonne
• Resource size currently independently estimated at 1.1 million carats anticipated to be increased
• Blasting, extraction and processing of final sample has commenced
• Final bulk sample results and diamond export for independent valuation due in August

Karl Smithson, CEO of Stellar, commented:

Tongo continues to yield excellent results underpinning the project’s significant potential. The reprocessing of sample tailings has yielded additional diamonds that have further enhanced the average bulk sample grade to 155 cpht. This grade compares very favourably with the previously calculated resource grade of 120cpht and should impact positively on project economics as well as the resource size, which is currently independently estimated at 1.1 million carats (JORC compliant). The final bulk sample to complete the 1,000 carat parcel is currently being extracted and processed and we expect the final grade and value data to be available in August.

Click here to read the full Stellar Diamonds plc (LSE:STEL) press release.