These beautiful circle spike fire opal studs are such a stunner. Earring has a opal circle with a hanging metal spike. Circle measures 3/8 of an inch in diameter and spike is 1/4 of an inch long. Man-made opal is available in snow white and azul blue with sterling silver and vermeil gold setting. Studs are attached to a sterling silver or vermeil gold post with a butterfly backing. Ships attached to genuine brown leather. Looks amazing mixed with any of Mana's magical fire opal studs. Made in Austin, TX by Mana Culture.