This chain is sure to be a show stopper, as these black stones offer a unique twist on the classic tennis chain. This 18” or 20” black moissanite tennis chain necklace features a row of brilliant 3mm moissanite stones over black plated solid 925 silver. Natural diamond shine at lab grown prices! Long lasting luster, durable, guaranteed to pass as moissanite on diamond testers, and ships within 1 business day. Moissanites are considered one of the top diamond alternatives and are made of pure silicon carbide an extremely rare, naturally-occurring mineral. These stones are almost as hard as natural diamonds (moissanite’s hardness is 9.5 on the Mohs scale, whereas diamond’s is 10). Moissanite stones can even pass some diamond testers. Maybe best of all, moissanites are ethically sourced, conflict-free, and ecologically friendly!