Blue Topaz
Topaz occurs in a range of different colors:
much colorless topaz is irradiated and heat treated to a range of blues,
some almost indistinguishable from aquamarine when seen with the naked-eye.
The name "topaz" is thought to be derived from the Sanskrit word topaz, meaning fire.
Data
Composition: aluminum fluorohydroxysilicate
Hardness: 8
Specific gravity: 1.62-1.63R.I.: 3.54
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Name: Blue Topaz
color:
Treatment:
Weight: 31.15ct
Size:17.88 x 17.96 x 14.69 mm
$10 per carat
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Name: Blue Topaz
color:
Treatment:
Weight: 1.54ct
Measurement: 7.2 x 4.9 mm
$6 per carat
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Name: Blue Topaz
color:
Treatment:
Weight: 2.44ct
Size: 9.2 x 7.2 x 5.2 mm
$6 per carat
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Name: Blue Topaz
color:
Treatment:
Weight: 2.23ct
Size: 9.1 x 7.1 x 4.7 mm
$10 per carat
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