These delicate opal stud earrings are made of turquoise and blue opal and gold plated sterling silver, formed into a tiny petal form. 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 7mm in length. The opals are set into gold plated sterling silver. The butterfly backs are made from gold plated sterling silver.