Purchased a loose stone to set in an heirloom engagement band. I was not disappointed. Jeweler here in Chicago wasn't new to moissanite, but still marveled at the quality of the stone. He spent minutes examining it under a loupe. Asked me how much I paid for it. He used the diamond tester (positive for moissanite ); his independent testing for mm and carat weight (1.77 diamond equivalent; 1.6 moissanite) were exactly as BTD listed. The stone is STUNNING. I have 1.0 TCW stud earrings (purchased in 2012 from moissanite & co) and the original stone in the engagement ring is a very small but clean diamond. This stone exceeds them all by far. I spent half my morning playing with the stone in the light. It is so brilliant.