編號 100146163

沒有保留價 - 1 pcs 藍色 黃玉 - 23.90 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 瑞士蓝
編號 100146163

沒有保留價 - 1 pcs 藍色 黃玉 - 23.90 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 Pear, Mixed Cut
Measurements .................................................................. 18.57 x 17.12 x 10.65 mm
Carat Weight ................................................................................................... 23.90 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
31394844
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