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1 item @ $25.00  
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Bertrandite with Fluorite "Tiffany Stone"

#BM40587
SOLD
Bertrandite from Brush Wellman mine, Spor Mountain, Juab County, Utah, United States - BM40587
Bertrandite from Brush Wellman mine, Spor Mountain, Juab County, Utah, United States - BM40587

Bertrandite with Fluorite "Tiffany Stone"

#BM40587
Availability
Sold
Size
6.5 x 4 x 4 cm - Sm Cabinet 
Formula
Be4Si2O7(OH)2 (RRUFF)
Locality
Brush Wellman mine, Spor Mountain, Juab County, Utah, United States
Tagged
beryllium

This is a cherty or porcelain-like mass of a mixture of Bertrandite and purple FLuorite. It is/was highly desireable material for lapidary called "Tiffany Stone".

Bertrandite

Formula
Be4Si2O7(OH)2 
Crystal System
Orthorhombic 
Crystal Habit
Crystalline - Fine, Tabular, Prismatic 
Cleavage
Perfect, Distinct, Distinct 
Luster
Vitreous (Glassy) 
Color
colorless, pale yellow 
Streak
white 
Class
Orthorhombic - Pyramidal 
Fracture
Brittle 
Hardness
6-7 

Data courtesy of Webmineral.

Collection
McConlogue Collection
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Other Available Bertrandite
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