沒有保留價 - 1 pcs 藍色黃玉 - 21.94 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 瑞士蓝

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ALGT COLORED STONE IDENTIFICATION REPORT IDENTIFICATION Species .......................................................................................................... Natural Topaz Variety .................................................................................................................. Blue Topaz DESCRIPTION Shape & Cutting Style ......................................................................... Oval, Mixed Cut Measurements .................................................................... 18.78 x 14.44 x 9.73 mm Carat Weight ................................................................................................... 21.94 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 42595053

編號 100407282

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沒有保留價 - 1 pcs 藍色黃玉 - 21.94 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - 瑞士蓝

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ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species .......................................................................................................... Natural Topaz
Variety .................................................................................................................. Blue Topaz
DESCRIPTION
Shape & Cutting Style ......................................................................... Oval, Mixed Cut
Measurements .................................................................... 18.78 x 14.44 x 9.73 mm
Carat Weight ................................................................................................... 21.94 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
42595053