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Topaz

#49106

Topaz

#49106
Availability
Sold
Size
17 x 13 x 8 cm - Cabinet 
Formula
Al2SiO4F2 (RRUFF)
Locality
Lord Hill pegmatite, Stoneham, Oxford Co., Maine, United States

I can't say much about the photos, but the specimen is magnificent. It is a huge blue Topaz crystal from the Chris van Laer collection. It's hardly gemmy, but internally fractured. The cyrstal has four faces with a typical pryamidal face of Topaz. I am not sure if Chris collected this specimen, but his label clearly states it is from the Lord Hill pegmatite.

Topaz

Formula
Al2SiO4F2 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Coarse, Prismatic, Massive - Granular 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, pale blue, yellow, yellowish brown, red 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Brittle - Uneven 
Hardness

Data courtesy of Webmineral.

Collection
Chris van Laer Collection
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On Dakota Matrix
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On Dakota Matrix
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