Star K Classic 3 Stone Ring with Round 7mm Genuine Peridot Sterling Silver Metal: 925 Sterling Silver. Dimensions: Width: 7.00 mm Length: 7.00 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. Peridot: The 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. Additional Stones: (cubic-zirconia, Shape: round-shape, Color: Colorless.)