1. 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).
1. 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.
2. 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.
