" algt colored stone identification report identification species .......................................................................................................... natural topaz variety .................................................................................................................. blue topaz description shape & cutting style ............................................................................... leaf, carved measurements .................................................................... 20.17 x 15.44 x 7.08 mm carat weight ................................................................................................... 18.19 carat color ....................................................................................................................... light blue transparency .................................................................................................. transparent additional grading characteristics trade color name ................................................................................................ 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. 30 june, 2025 16328895