Charles & Colvard 14K Yellow Gold Threaded Screw Back 5mm VG Moissanite Round 4 Prong Stud Earrings (1.0 cttw Diamond Equivalent Weight, I-J Color, VS1-VS11 Clarity) Pair of 5.0mm Each Round Cut Forever Classic Moissanite Stones (0.82CTW Actual Weight, 1.0CTW Diamond Equivalent Weight) Four (4) Prong 14k Yellow Gold Screw Back (Threaded) Round Stud Earrings Round Faceted Very Good Quality and Cut Charles and Colvard Created Moissanite With a hardness of 9.5 on the Mohs scale, it is the second hardest natural material known to man Includes Charles and Colvard Certificate