Sparking 925 Sterling Silver Layered Moon and Star Necklace 1ct Moissanite Necklace within a Sterling Half Moon and Star Poor Ginny Luna Moissanite Necklace, Crescent Moon Moissanite Necklace With Black GP Celestial Collection The Night Queen Moissanite Star Necklace Astra Moissanite and Diamond Necklace, Starlight Moon and Star Necklace. Includes: A matching box. 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, Rhodium plated, Moissanite 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: 16 in Extension chain length: 2 in Total: 0. 4 carat Weight: 0. 09 oz (2. 5 g)