編號 99718868

1 pcs 橙色 黃玉 - 2.28 ct - Antwerp Laboratory for Gemstone Testing (ALGT)
編號 99718868

1 pcs 橙色 黃玉 - 2.28 ct - Antwerp Laboratory for Gemstone Testing (ALGT)
algt colored stone identification report
identification
species .......................................................................................................... natural topaz
variety ............................................................................................................ orange topaz
description
shape & cutting style ......................................................................... pear, mixed cut
measurements ....................................................................... 13.44 x 6.15 x 3.70 mm
carat weight ...................................................................................................... 2.28 carat
color ............................................................................................................................. orange
transparency .................................................................................................. transparent
comments
may be called "imperial topaz" in the trade.
orange topaz is occasionally enhanced by irradiation to improve its color.
there is currently no scientific method available to determine whether this
gemstone has been enhanced or not.
30 june, 2025
68564016
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