Grandidierite and Hardystonite Physical Properties

Grandidierite

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

2.85-3.003.396-3.443

1 7.18

1.5 Fracture

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

Brittle, Metallic

1.6 Cleavage

Perfect

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

1.7 Mohs Hardness

7.53-4

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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

Grandidierite and Hardystonite Chemical Formula

While comparing Grandidierite 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 Grandidierite and Hardystonite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Compare Green Gemstones

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Grandidierite and Hardystonite Specific Gravity

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