Moissanite Rhodium-Plated Half-Eternity RingIncludes: No certificate of authenticity and limited warranty card with gemological research association (GRA), because a single moissanite has fewer carats (less than 0. 3 carats). A matching box. Style: Minimalist Material: 925 sterling silver, Rhodium 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