Gahnite and Hardystonite Physical Properties

Gahnite

Hardystonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.623.396-3.443

1 7.18

1.5 Fracture

Conchoidal, Uneven

Brittle, Metallic

1.6 Cleavage

Indistinct parting on [111]

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

1.7 Mohs Hardness

7.5-83-4

2 10

1.8 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Gahnite and Hardystonite Chemical Formula

While comparing Gahnite and Hardystonite 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 Gahnite and Hardystonite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

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Gahnite Vs Indicolite Blue Tourmaline

Gahnite and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnite and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnite and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Gahnite is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.