Pieces: 1-piece Includes: 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). Material: 925 sterling silver, Moissanite Carat weight: 0.33 Care instructions: 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:5:Actual Length 2 in6:Actual Length 2.1 in7:Actual Length 2.2 in8:Actual Length 2.3 in9:Actual Length 2.4 in Weight 0.2 oz (5 g)