.925 Sterling Silver Round-Cut Diamond = Approximately 0.06 Ct. Tw.; Color = I-J ; Clarity = I2-I3 Gemstone(S): Amethyst, Blue Topaz, London Blue Topaz, Citrine, Peridot = Approximately 3.00 Ct. Tw. It Is Customary To Treat Most Gemstones To Achieve Enhanced Color And Durability. Some Of These Treatments May Not Be Permanent, And May Require Special Care. Please Note: In Product Titles Ct. Tw. Refers To The Total Carat Weight Of All Diamonds And/Or Gemstones Combined. Made In The Usa