3 Authentic Moissanite Loose Stones Test Positive

Three authentic moissanite stones from right to left in the first picture. The round brilliant cut stone is 1.85ct , the middle emerald cut stone 1.25ct and three (greenish) round cut stone is .85ct. All have been tested and all test positive. I am not sure the grade but they are in really good shape to the close eye. Received these in an auction in Las Vegas a month and a half ago. Also open to offers if you don’t want all three maybe we can work something out.