編號 103300950

沒有保留價 - 1 pcs 藍色 黃玉 - 30.06 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 天蓝色
編號 103300950

沒有保留價 - 1 pcs 藍色 黃玉 - 30.06 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 天蓝色
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species .......................................................................................................... Natural Topaz
Variety .................................................................................................................. Blue Topaz
DESCRIPTION
Shape & Cutting Style ......................................................................... Oval, Mixed Cut
Measurements .................................................................. 20.05 x 15.05 x 11.75 mm
Carat Weight ................................................................................................... 30.06 Carat
Color ................................................................................................................................... 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 March, 2026
25082708
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