Mysticdrop 0.20-0.45 Cts of 4 mm AAA Round Swiss Blue Topaz (1 pc) Loose Gemstone The loose round Swiss Blue Topaz has the finest AAA quality electric-blue colored gem measuring 4 mm. AAA quality gems are Loop Clean gemstones, with no visible nicks, or inclusions. The color is even and consistent. These gemstones are considered very good in quality. Blue Topaz is created by treated a colorless natural topaz. 30 Day No questions asked Return Policy Free-Shipping within US Loose Swiss Blue Topaz / December Birthstone