Amazon.com: Certified Heart Cut Moissanite Solitaire Necklace 14K Gold Jewelry Moissanite 925 Sterling Silver Heart Pendant Necklace Poshmark Heart Moissanite Diamond Necklace 18K Solid Gold Necklace Etsy Heart Moissanite Solitaire Necklace with Chain pen281 MoissaniteCo.com. Includes: A matching box. 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. Style: Minimalist Material: 925 sterling silver, Rhodium plated, Moissanite, Zircon(accent stones) 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: 16 in Extension chain length: 2 in Main stone: 1 carat Weight: 0. 1 oz (3 g)