Sterling Silver Opal Pendant & Chain Opal Necklace Opal Gift UK Opal Necklace Pendant Pearl Surrounded with Rose Gold Chain 45cm Huge Solid Gold Opal Pendant 18K Gold Round Opal Dainty Opal Etsy Opal Pendant Etsy Opal Pendant Necklace Boulder & Lightning Ridge Opal. 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)