Hardystonite and Variscite Physical Properties

Hardystonite

Variscite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.396-3.4432.42-2.58

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

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

[010] perfect

1.7 Mohs Hardness

3-44-5

2 10

1.8 Chemical Composition

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

AlPO₄ · 2(H₂O)

Hardystonite and Variscite Chemical Formula

While comparing Hardystonite and Variscite 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 Variscite chemical formula.

Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Hardystonite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hardystonite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hardystonite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Hardystonite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.