These beautiful stud earrings are AB crystal or rainbow topaz. They are 8mm. They catch the light so beautifully. They really sparkle! Rainbow Topaz is a beautiful lab created yellow, pink and blue iridescent mixed stone. It’s the same colors as AB crystals. It is truly one of a kind! They are sterling silver. Comes from a cat friendly, smoke free home. Make me an offer! I am highly motivated to sell!!