14K Yellow Gold 2.5Ct Black CZ Round Butterfly Back Stud Earrings 7mmOur CZ stud earrings are cut exactly like real diamonds with the same number of facets for optimal sparkle, and they are as hard as natural diamonds. The diamonds are set in highly secure 4 prong mountings that feature push on, pull off posts and backings. These CZs emit every shade of light that a natural diamond would, with radiance and fire equivalent, if not superior, to a natural diamond of VVS1 clarity and D color with an excellent cut. Perfect