Pieces:1-piece Includes:A matching box.,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. Material:Platinum-Plated,925 sterling silver,Moissanite Carat weight:0.6CT 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.,While wearing the pearl jewelry, avoid exposure to the sun and contact with highly volatile substances such as perfume and hairspray, as it will easily fade in color and lose its luster. Imported Product Measurements (Measurements by inches) & Size Conversion Size Chain length One Size 16.1-19.7