~ Metal: Solid 14K White/Yellow Gold ~ Cut: Brilliant Solitaire CZ Round-Cut ~ Closure: Screw-Back ~ Craftsmanship: Made in USA Set pair (Two Individual studs per purchase) ~ Sizing : 2 MM (0.03 CT) 3 MM (0.11 CT) 4 MM (0.25 CT) 5 MM (0.46 CT) 6 MM (0.84 CT) 7 MM (1.28 CT) 8 MM (2.04 CT)