Identification Species :Natural Topaz Variety : Blue Topaz Description Shape & Cutting Style: Oval, Mixed Cut Measurements: 17.39 x 12.80 x 9.23 mm Carat Weight: 17.48 Carat Color: Blue Transparency: Transparent Additional Grading Characteristics Color Quality Grade: Sky Blue Comments Blue topaz is commonly enhanced by irradiation and/or heating to improve its color. There is currently no scientific method available to determine whether this gemstone has been enhanced or not. The photos were taken in a professional studio with extensive lighting to enhance the visibility of the color variations. The images have not been edited in order to present the most realistic representation possible. Color deviations may occur depending on the display settings of your computer, monitor, or smartphone. Well packed and insured registered shipping. Please feel free to take a look at my other listings and offers as well!