These are lab-grown diamond earrings made of sterling silver 925. Size: Approximately 4.9mm (approx. 0.5ct) Stone: Artificial diamond Marking: S925 Accessories: None The condition is clean with little use. Moissanite is popular these days, but these are artificial diamonds. The hardness and refractive index are exactly the same as natural diamonds. The advantage of artificial diamonds is that you can get the same brilliance as natural diamonds at a lower price. I have included several images because they sparkle so much. Avalanche, Ice Link, Jojo, Joe Rodeo, Aquamaster, JPM, IF&Co, Avalanche, Variable Grillz, Jewelry, Trax NYC, Japan, 14k, 10k, 417, 585, 750, k18, hiphop, bboy, b-boy