2.25 Ct Oval Opal Charm Pendant Necklace with Diamonds, 24kt Gold and Sterling Silver Blue Opal Oval Pendant & Chain Opal Necklace UK Sterling Silver Opal Pendant & Chain Opal Necklace UK Opal Jewellery Oval Opal Necklace Opal pendant necklace, Opal necklace, Opal jewelry. Includes: A matching box. Style: Modern 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. 07 oz (2 g)