Each moissanite jewelry above 0.3 carat is accompanied by a Certificate Mens Moissanite Diamond Chains & Necklaces IceATL IceATL Diamonds "CL 97" Custom Name Moissanite Pendant 14K Gold Ice Cartel Moissanite Cuban Link Chains IceCartel. Style: Minimalist Appearance: Round Material: 925 sterling silver, moissanite, platinum plated, zircon (accent stones) Craft: Polished Care: Avoid wearing during exercise, as sweat will react with the jewelry to produce silver chloride and copper sulfide. Imported Including: A matching box. Moissanite jewelry over 0. 3 carats includes a certificate of the stone properties and a limited warranty card with the original overseas manufacturer. repairs will be covered, but return shipping cost will be purchaser's responsibility. Product measurements: Chain length: 18 in Main stone: 0. 5 carat Weight: 0. 1 oz (3 g)