Pieces: 1-pair 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: 18K gold-plated, 925 sterling silver, Moissanite Carat weight: 0.16+0.16 Care instructions: To preserve the brilliance of your jewelry, we recommend removing your jewelry while exercising, using household chemicals, or cleaning., 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 (Measurements by inches) & Size Conversion Size Actual Width Actual Length One Size 0.5 1.2