Moissanite Necklaces Moissanite Necklaces & Pendants Luxus Moissanite Co. Custom Moissanite Pendants Millennium Jewelery Amazon.com: Moissanite Necklace for Women, 2 CT Round D Color VVS1 266925 Sterling Silver Moissanite Rings Queenou Jewelry. Includes: No certificate of authenticity and limited warranty card with gemological research association (GRA), because a single moissanite has fewer carats (less than 0. 3 carats). Material: 925 sterling silver, 18K rose gold plated, Platinum plated, Moissanite Carat weight: 0. 5 Care instructions: 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 Product measurements: Chain length: 17. 7 in Weight: 3. 3 oz (94 g)