Star Diamond Corporation announced that a total of 3,423 diamonds weighing 199.36 carats have been recovered to date from the tenth (19FALCT006) bulk sample trench excavated on the Star Kimberlite by Rio Tinto Exploration Canada Inc. ("Rio Tinto Canada") in 2019. The recovery of four larger 8.59, 6.52 (Type IIa), 5.09, 4.04 carat diamonds from Rio Tinto Canada's tenth trench. The initial results from the ten reported trenches continue to validate the grades outlined in Preliminary Economic Analysis that was based upon Star Diamond's own prior underground bulk sampling and large diameter drilling programs. The recovery of larger diamonds from Rio Tinto Canada's bulk sample program, including larger Type IIa diamonds, also continues to strengthen expectation for recovery of large, high value diamonds in a future producing diamond mine.