Each moissanite jewelry above 0.3 carat is accompanied by a Certificate of Authenticity and a Limited Warranty Card with Gemological Research Association (GRA). Picture style: Ghost mannequin Features: Rhinestone Material: 925 sterling silver, moissanite Care: Avoid wearing during exercise, as sweat will react with the jewelry to produce silver chloride and copper sulfide Product measurements: Length: 9 in Moissanite: 1 carat