Hardystonite and Sard Physical Properties

Hardystonite

Sard

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.396-3.4432.58-2.63

1 7.18

1.5 Fracture

Brittle, Metallic

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

3-46.5-7

2 10

1.8 Chemical Composition

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

SiO 2Ulrich Henn and Claudio C.

Hardystonite and Sard Chemical Formula

While comparing Hardystonite and Sard 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 Sard chemical formula.

Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

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Hardystonite and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hardystonite and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hardystonite and Sard Optical Properties during the identification of gemstone. Specific gravity of Hardystonite is 2.58-2.63 whereas that of Sard is 2.58-2.63.