Opal Oval Pendant Chain Necklace White One Size Sterling silver Opal Pendant Etsy Opal Round Pendant Chain Necklace Opal Pendant Necklace Boulder & Lightning Ridge Opal Opal Pendant: Oval White Opal in Silver Frame on Chain Pendants. 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)