No reserve price - 1 pcs Blue Topaz - 37.78 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - スイスブルー

Expert

Selected by Alberto Fidalgo

Species .......................................................................................................... Natural Topaz Variety .................................................................................................................. Blue Topaz DESCRIPTION Shape & Cutting Style ................................................. Square Cushion, Mixed Cut Measurements .................................................................. 16.95 x 16.70 x 14.24 mm Carat Weight ................................................................................................... 37.78 Carat Color ........................................................................................................................ Vivid Blue Transparency .................................................................................................. Transparent Trade Color Name ............................................................................................ Swiss Blue Color Quality Grade .......................................................................... Fine Color Quality 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. 02 March, 2026 14997722

No. 105142635

Sold

No reserve price - 1 pcs Blue Topaz - 37.78 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - スイスブルー

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Species .......................................................................................................... Natural Topaz
Variety .................................................................................................................. Blue Topaz
DESCRIPTION
Shape & Cutting Style ................................................. Square Cushion, Mixed Cut
Measurements .................................................................. 16.95 x 16.70 x 14.24 mm
Carat Weight ................................................................................................... 37.78 Carat
Color ........................................................................................................................ Vivid Blue
Transparency .................................................................................................. Transparent

Trade Color Name ............................................................................................ Swiss Blue
Color Quality Grade .......................................................................... Fine Color Quality
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.
02 March, 2026
14997722

Final bid

€ 68

No reserve price

Expert

Selected by Alberto Fidalgo

Retail Estimate € 800 - € 1,000

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