Aurore Borale and Aqua Diamond Cut Austrian Crystal Stud Earrings, 7mm Aurore Boreale and aqua coating (blue luster with a golden rainbow glow) 7mm stud earrings; friction back Made in the USA with genuine Swarovski crystal elements Hypoallergenic surgical steel meets federal standards for lead-free compliance "Diamond" refers to the style of the cut, not the stone itself; these are Austrian Crystal pieces