Opal Pendant Necklace Boulder & Lightning Ridge Opal Angara Natural Opal Necklace Round Opal Pendant Necklace for Women Petra Class Handmade Link Chain Australian Opal Doublet Gold Pendant Opal Necklace Pendant Pearl Surrounded with Rose Gold Chain 45cm Huge Opal Pendant Necklace Genuine Opal Gemstone Sterling Silver Opal Pendant & Chain Opal Necklace UK Opal Jewellery. Includes: A matching box. Style: Minimalist Material: 925 sterling silver, platinum plated, opal Care: Avoid wearing during exercise, as sweat will react with the jewelry to produce silver chloride and copper sulfide, which causes the jewelry to deteriorate and corrode over time. Imported Gemstone origin: Australia Product measurements: Chain length: 15. 7 in Extension chain length: 2 in Weight: 0. 06 oz (1. 7 g)