Star K Sterling Silver Round 7mm Halo Earring Studs Metal: 925 Sterling Silver. Dimensions: Width: 9.50 mm Length: 9.50 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. CREATED SAPPHIRE: The Created Birthstone for September. Named From the Latin `sapphirus` meaning `blue`. A symbol for truth and sincerity, it inspires enlightenment, health and peace. Sapphire naturally occurs in many different colors. Additional Stones: (cubic-zirconia, Shape: round-shape, Color: Colorless.)