Mysticdrop 4.00-4.95 Cts of 10 mm Round Checker Board AAA Loose Swiss Blue Topaz (1 pcs) Gemstone Blue Topaz is the official gemstone of Texas. The loose round checker board-cut Swiss Blue Topaz is a fine AAA quality bright-blue colored gem measuring 10 mm. AA quality Topaz are eye clean, with no visible nicks or inclusions. The color is even and consistent. Design your own ring or a pendant; buying loose gemstones is economical and allows one to create jewelry as per choice. 30 Day No questions asked Return Policy Free-Shipping within US Loose Swiss Blue Topaz / December Birthstone All our diamond suppliers confirm that they comply with the Kimberley Process to ensure that their diamonds are conflict free.