4.20-6.00 Cts of 11x9 mm AAA Emerald London Blue Topaz ( 1 pc ) Loose Gemstone The loose emerald-cut London Blue Topaz is the finest AAA quality deep blue colored gem measuring 11x9 mm. AAA quality Topaz are Loop clean gemstones, with no visible nicks, or inclusions. The color is even and consistent. Blue topaz is created by treating a natural colorless topaz. 30 Day No questions asked Return Policy Free-Shipping within US Loose Swiss Blue Topaz / December Birthstone