Spinel and Hardystonite Physical Properties

Spinel

Hardystonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

none

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.64-3.663.396-3.443

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Brittle, Metallic

1.6 Cleavage

None, but may exhibit slight parting

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

1.7 Mohs Hardness

83-4

2 10

1.8 Chemical Composition

MgAl₂O₄

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

Spinel and Hardystonite Chemical Formula

While comparing Spinel 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 Spinel and Hardystonite chemical formula.

Chemical formula of Spinel- MgAl₂O₄
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

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Spinel and Hardystonite Specific Gravity

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