8.0 MM Round Brilliant Cut Forever One&reg; Moissanite by Charles & Colvard 57 Facets - Very Good Cut (1.6ct Actual Weight, 1.90ct Diamond Equivalent Weight) 1.60 Moissanite Average Weight Round Cut Loose Stone, Very Good Quality 1.90 Diamond Equivelant Weight. The highest quality Moissanite meeting the most stringent quality control specifications Includes Certificate of Authenticity and Limited Warranty with Loose Stone Display Box Durable, resistant to chipping, with a refractive index of 2.65 to 2.69 exibiting high dispersion Lab Created in the USA