Created Opal Stud Earrings in 14K Gold OPAL STUDS: Fiery opals glisten against a gold backdrop OVAL-CUT OPALS: Studs feature 8X6 mm fiery, oval-cut created opals 14K GOLD: The greater purity of 14K Gold ensures long-lasting durability and improved resistance to wear and tarnish OCTOBER BIRTHSTONE: Opal gemstones contain a fiery, one-of-a-kind color combination, making for a truly one-of-a-kind gift for anyone celebrating an October birthday Earrings measure 3/8 by 5/16 inches and feature post with friction-back back findings