14K Yellow Gold 0.40Ct Brilliant CZ Bowtie Lock Stud EarringsOur CZ stud earrings are cut exactly like real diamonds, with the same number of facets for optimal sparkle, and they are super hard, just like real diamonds. No one will tell the difference! The earrings feature screw off posts and backings. The diamonds emit every shade of light that a natural diamond would emit. The radiance and fire of these CZ are equivalent, if not superior, to a natural diamond of VVS1 clarity, D color, and excellent cut.