Whether you are looking for a single earring for an additional ear piercing, or to just mix up your look, we have lots of choices. This is a single round stud of genuine blue sapphire. Sapphire is the cherished birthstone for September. 14 karat white gold Round blue sapphire weighs .20 carat Diameter 3 mm Push post with butterfly back Crafted in USA of imported materials 458700051 Vendor Style: 3.5MM SAPP