Each piece of jewelry from Trump Gems comes with a Certificate of Authenticity to guarantee that your item's quality is equal to what was promised in our ads and on our website. This is our guarantee that every piece of jewelry we sell has undergone and passed our rigorous Quality Assurance requirements. We will stand behind the quality and craftsmanship of the jewelry that we offer both in our auctions and on our web site. We stand behind our merchandise and guarantee that that the metal, metal weights, gemstones and carat weights in our descriptions are accurate and as described. Therefore, our Certificate also assures you that the consignor/vendor product description has provided is accurate and complete, and that the documentation and data on each item has been verified and substantiated*.