Sterling Silver, Pink Tourmaline, Pink Sapphire, and Diamond Stud Earrings Sterling silver stud earring featuring cluster of pink tourmaline and pink sapphires framed in small, round-cut diamonds Post with friction back Gemstones may have been treated to improve their appearance or durability and may require special care. All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free. Imported