編號 100146106

1 pcs 藍色 黃玉 - 45.30 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 瑞士蓝
編號 100146106

1 pcs 藍色 黃玉 - 45.30 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 ......................................................................... Pear, Mixed Cut
Measurements .................................................................. 21.65 x 21.22 x 14.50 mm
Carat Weight ................................................................................................... 45.30 Carat
Color ................................................................................................................... Intense 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.
18 November, 2025
50013655
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