The Charmed Moissanite Ring does not come with a certificate of authenticity or a limited warranty card from the Gemological Research Association (GRA). This is because each individual moissanite stone is less than 0.3 carats, with a total carat weight of 2.1 carats. The ring is made of 925 sterling silver, rhodium-plated, and features moissanite stones totaling 0.1 carats each. To maintain its beauty, we recommend avoiding wearing the ring during exercise to prevent a chemical reaction between sweat and the jewelry components. The ring also comes with a matching box for safekeeping.