Genuine 18K Gold And 8mm White Freshwater Pearl Stud Earrings Classic, Elegant and Delicate Brand New Main Stone: Cultured White Pearl Pearl Shape: Button Pearl Size: 8 mm Pearl Grade: AAA Top Quality Finding: 18K karat gold Hypoallergenic Tarnish Resistant Back setting of the earring contains 18 karat gold with soft hypoallergenic silicone Will come in a box Pearls are the only gems that are produced by an animal. Cultivators mimic the way natural, uncultured pearls are created by implanting a beadlike nucleus from a mollusk shell into an oyster, and the animal responds to the irritant by coating it with a pearlescent nacre of calcium carbonate, layer by layer, multiple times per day. In this article the sizes and shapes of freshwater cultured pearls are approximate, therefore no claims are accepted for this reason. To preserve this jewel, it is recommended not to expose it to direct contact with creams and perfumes.