Hardystonite and Amethyst Physical Properties

Hardystonite

Amethyst

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

insoluble in common solvents

1.3 Durability

Not Available

1.4 Specific Gravity

3.396-3.4432.65

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

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

Indiscernible

1.7 Mohs Hardness

3-47

2 10

1.8 Chemical Composition

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

SiO₂

Hardystonite and Amethyst Chemical Formula

While comparing Hardystonite and Amethyst 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 Amethyst chemical formula.

Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Amethyst- SiO₂

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Hardystonite and Amethyst Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hardystonite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hardystonite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Hardystonite is 2.65 whereas that of Amethyst is 2.65.