These delicate opal stud earrings are made of turquoise and blue opal and gold plated sterling silver, formed into tiny wings or crescents. They have an amazing glowing quality and when they catch the light, flecks of gold and turquoise light up from within. They are really beautiful and unusual. The stud or post earrings measure 10mm in length. The opals are set into gold plated sterling silver. These stud earrings come mounted on a linen presentation card. You also have the option of adding a well crafted glass presentation cloche. They transform the earrings into tiny historical specimens, and make a beautiful and engaging gift idea.