Green Opal Turtle Stud Earrings in Silver Lisa Angel Beryl Lane Vintage 9ct Yellow Gold Vibrant Opal Triplet Stud Earrings Opal Turtle Platinum Plated Stud Earrings Opal Hope Turtle Earrings Blue Opal earrings stud, Fire opal Opal Turtle Stud Earrings By Francesca Rossi Designs. Style: Modern Appearance: Turtle Material: 925 sterling silver, platinum plated, opal Craft: Polished Care: Avoid wearing during exercise, as sweat will react with the jewelry to produce silver chloride and copper sulfide. Imported Gemstone origin: Australia Including: A matching box. Product measurements: Length: 0. 5 in (1. 3 cm) Weight: 0. 09 oz (2. 5 g)