Hardystonite and Tanzanite Physical Properties

Hardystonite

Tanzanite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

Hard

1.4 Specific Gravity

3.396-3.4433.35

1 7.18

1.5 Fracture

Brittle, Metallic

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

[001] good, [100] and [110] fair

Perfect {010}, imperfect {100}

1.7 Mohs Hardness

3-46.5-7

2 10

1.8 Chemical Composition

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Ca₂Al₃(SiO₄)₃(OH)

Hardystonite and Tanzanite Chemical Formula

While comparing Hardystonite and Tanzanite 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 Hardystonite and Tanzanite chemical formula.

Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)

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Hardystonite and Tanzanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hardystonite and Tanzanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hardystonite and Tanzanite Optical Properties during the identification of gemstone. Specific gravity of Hardystonite is 3.35 whereas that of Tanzanite is 3.35.