Hardystonite and Ruby Physical Properties

Hardystonite

Ruby

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.396-3.4433.97-4.05

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal

1.6 Cleavage

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

No true cleavage

1.7 Mohs Hardness

3-49

2 10

1.8 Chemical Composition

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

Al ₂ O ₃

Hardystonite and Ruby Chemical Formula

While comparing Hardystonite and Ruby 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 Ruby chemical formula.

Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Ruby- Al ₂ O ₃

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Hardystonite and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hardystonite and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hardystonite and Ruby Optical Properties during the identification of gemstone. Specific gravity of Hardystonite is 3.97-4.05 whereas that of Ruby is 3.97-4.05.