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. Picture style: Ghost mannequin Features: Moissanite, total moissanite is 1.8 ct Material: 925 sterling silver, moissanite, rhodium-plated Care: Avoid wearing during exercise, as sweat will react with the jewelry to produce silver chloride and copper sulfide. Imported Product measurements: Chain length: 16 inExtension chain length: 2 inMoissanite: 1.8 carat