Includes:Moissanite jewelry over 0.3 carats includes a certificate of stone properties. Limited warranty included, please contact us for any issues related to your purchase.A matching box. Style: Modern Material: 925 sterling silver, Platinum-plated, Moissanite 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 Product measurements: Chain length: 7 inMoissanite: 10 carats in totalWeight: 0.3 oz (9 g)