algt colored stone identification report identification species .......................................................................................................... natural topaz variety .................................................................................................................. blue topaz description shape & cutting style ......................................................................... oval, mixed cut total carat weight .......................................................................................... 5.82 carat color ....................................................................................................................... deep blue transparency .................................................................................................. transparent additional grading characteristics trade color name ....................................................................................... london blue comments total 6 stones. average carat weight: 0.97 ct. 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. 16 september, 2025 28612055