The company noted that the grade will increase as further diamonds are recovered from re-processing and has uncovered a number of outstanding gem-quality diamonds with stones up to 6.7ct in size.
The bulk sampling of the 1.1 million carat Tongo dyke is part of the definitive feasibility study (DFS) conducted by the company, which is on track for completion by the end of the year.
Stellar Diamonds chief executive Karl Smithson said the results from the on-going bulk sampling programme continue to underscore the Tongo Dyke-1 kimberlite’s high-grade nature.
"The presence of larger gem stones up to 6.7ct in size bodes well for the diamond valuation, which will be undertaken as part of the DFS that is on-track for delivery towards the end of 2014," Smithson said.
Aimed to recover at least 1,000ct for diamond grade and value modeling on the existing JORC-compliant resource, the company will continue to continue sampling program.
The bulk sampling at Dyke-1 is being undertaken by Stellar as part of the DFS.
Based on the location of the kimberlite, the sample can be broadly divided into sub-samples.
