1.40-1.58 Cts of 8x6 mm AAA Oval Russian Lab Created Alexandrite ( 1 pc ) Loose Gemstone This is a charming AAA Oval Loose Russian Lab Created Alexandrite measuring 8x6 mm. Minimum Gemstone Weight: 1.00-1.97 Carats. A 100% color change Alexandrite, changes color from green to purple. 30 Day No questions asked Return Policy Free-Shipping within US Loose London Blue Topaz