Moissanite and Polyhalite Physical Properties

Moissanite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

none

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.17-3.242.78

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle

Conchoidal, Brittle

1.6 Cleavage

(0001) indistinct

Perfect on {10 1 }; parting on {010}

1.7 Mohs Hardness

9-9.53.5

2 10

1.8 Chemical Composition

SiCArthur Thomas , Gemstones (2009)

Not Available

Moissanite and Polyhalite Chemical Formula

While comparing Moissanite and Polyhalite 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 Moissanite and Polyhalite chemical formula.

Chemical formula of Moissanite- SiCArthur Thomas , Gemstones (2009)

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Moissanite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Moissanite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moissanite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Moissanite is 2.78 whereas that of Polyhalite is 2.78.