Star K 7mm Trillion Star Earrings with Simulated Peridot Sterling Silver Metal: 925 Sterling Silver. Dimensions: Width: 8.50 mm Length: 8.50 mm This beautiful design is part of the exclusive Star K. Jewelry collection. Star K, is a reputable American Family Business based in New York since 1986, uses only the highest quality materials, and will proudly stand behind all of her products. Simulated Peridot: The Simulated Birthstone for August. From the Greek `Peridona` for `giving plenty`. A symbol of the sun, Peridot was worn by ancient Egyptians and Romans. It is thought to bring good luck, peace, protection and success. Lifetime Warranty exclusively offered by Finejewelers. High End Jewerly Box and Gift Packaging