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Zoisite var. tanzanite

#52326
SOLD
Zoisite from Merelani Hills, Umba Valley, Lelatema Mts., Arusha, Tanzania - 52326
Zoisite from Merelani Hills, Umba Valley, Lelatema Mts., Arusha, Tanzania - 52326

Zoisite var. tanzanite

#52326
Availability
Sold
Size
0.7 x 0.7 x 0.5 cm - Thumbnail 
Formula
Ca2Al3(Si2O7)(SiO4)O(OH) (RRUFF)
Locality
Merelani Hills, Umba Valley, Lelatema Mts., Arusha, Tanzania

This is a set of two crystals in parallel growth both perfect terminations. It shows excellent color and exhibits nice dichroism from blue to purple.

Gem Quality

Zoisite

Formula
Ca2Al3(Si2O7)(SiO4)O(OH) 
Crystal System
Orthorhombic 
Crystal Habit
Prismatic, Striated, Columnar 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
gray, apple green, brown, blue, rose red 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Even 
Hardness
6.5 

Data courtesy of Webmineral.

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