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Tanzanite
Tanzanite

Kyanite
Kyanite



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Tanzanite
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Tanzanite and Kyanite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Hard
Not Available
1.4 Specific Gravity
3.35
3.53-3.65
1.5 Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Splintery, Brittle, Metallic
1.6 Cleavage
Perfect {010}, imperfect {100}
[100] perfect [010] imperfect with 79° angle between
1.7 Mohs Hardness
6.5-7
4-7
1.8 Chemical Composition
Ca2Al3(SiO4)3(OH)
Not Available

Tanzanite and Kyanite Chemical Formula

While comparing Tanzanite and Kyanite 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 Kyanite chemical formula.

  • Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
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Tanzanite and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.