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Diameter, mm (1mm - 0,039inch)

Stone sphere balls - full range in stock "Zoisite"

Zoisite is a mineral that has a secondary hydrothermal nature. The pink variety of zoisite is called thulite, the blue variety is called tanzanite.
You can see zoisite stone for sale and buy it in the Minerals of Russia online store.

Physical Properties of Zoisite

General
Category Sorosilicate - epidote group
Formula
(repeating unit)
Ca2Al3(SiO4)(Si2O7)O(OH)
IMA symbol Zo[1]
Strunz classification 9.BG.10
Dana classification 58.2.1b.1
Crystal system Orthorhombic
Crystal class Dipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space group Pnma
Identification
Color White, gray, greenish brown, greenish gray, pink, blue, purple
Crystal habit Prismatic crystals with striations; massive to columnar
Cleavage Perfect {010} imperfect {100}
Fracture Uneven to conchoidal
Mohs scale hardness 6 to 7
Luster Vitreous, pearly on cleavage surfaces
Streak White or colorless
Diaphaneity Transparent to translucent
Specific gravity 3.10–3.36
Optical properties biaxial positive
Refractive index nα = 1.696 - 1.700 nβ = 1.696 - 1.702 nγ = 1.702 - 1.718
Birefringence 0.006-0.018
Pleochroism X = pale pink to red-violet; Y = nearly colorless to bright pink or deep blue; Z = pale yellow to yellow-green
References [2][3][4]
Major varieties
Tanzanite Gem-quality zoisite, blue-purple
Thulite Pink

Code: 2008
Middle Urals, RF
68mm

0.00 $ $163.64

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