編號 105611753

沒有保留價 - 1 pcs 藍色 黃玉 - 40.53 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 瑞士蓝
編號 105611753

沒有保留價 - 1 pcs 藍色 黃玉 - 40.53 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 瑞士蓝
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species .......................................................................................................... Natural Topaz
Variety .................................................................................................................. Blue Topaz
DESCRIPTION
Shape & Cutting Style ................................................ Modified Octagon, Step Cut
Measurements .................................................................. 18.14 x 16.77 x 13.53 mm
Carat Weight ................................................................................................... 40.53 Carat
Color ....................................................................................................... Intense/Vivid Blue
Transparency .................................................................................................. Transparent
ADDITIONAL GRADING CHARACTERISTICS
Trade Color Name ............................................................................................ Swiss 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.
22 June, 2026
70641155
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