編號 104321247

1 pcs 藍色 黃玉 - 38.12 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 伦敦蓝
編號 104321247

1 pcs 藍色 黃玉 - 38.12 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 伦敦蓝
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species .......................................................................................................... Natural Topaz
Variety .................................................................................................................. Blue Topaz
DESCRIPTION
Shape & Cutting Style ......................................................................... Oval, Mixed Cut
Measurements .................................................................. 20.41 x 17.32 x 13.20 mm
Carat Weight ................................................................................................... 38.12 Carat
Color ....................................................................................................................... Deep Blue
Transparency .................................................................................................. Transparent
ADDITIONAL GRADING CHARACTERISTICS
Trade Color Name ....................................................................................... London 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.
02 March, 2026
71611482
類似物品
-
-
-
-
-
-
-
-
-
-

