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Tanzanite
Tanzanite

Afghanite
Afghanite



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Tanzanite
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Afghanite

Tanzanite and Afghanite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
Hard
3.35
Uneven, Conchoidal
Perfect {010}, imperfect {100}
6.5-7
Ca2Al3(SiO4)3(OH)
 
-
-
-
2.55-2.65
Conchoidal
Perfect {10 1 0}
5.5-6
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)

Tanzanite and Afghanite Chemical Formula

While comparing Tanzanite and Afghanite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Tanzanite and Afghanite chemical formula.

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Tanzanite and Afghanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite Vs Afghanite during the identification of gemstone. Specific gravity of Tanzanite is whereas that of Afghanite is .