Sterling Silver Opal Pendant & Chain Opal Necklace Opal Gift UK Opal Stone Necklace Jewellery at Ashley Bruny blog Classic 1CT Solitaire Bezel Set Opal Pendant Necklace 14K Gold Plated Opal Pendant Necklace Boulder & Lightning Ridge Opal Sterling Silver Opal Pendant & Chain Opal Necklace Opal Gift UK DSC06813. 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)