Vishnevite and Grandidierite Physical Properties

Vishnevite

Grandidierite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available2.85-3.00

1 7.18

1.5 Fracture

Brittle, Uneven

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

1.6 Cleavage

Perfect

1.7 Mohs Hardness

5-67.5

2 10

1.8 Chemical Composition

Not Available

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

Vishnevite and Grandidierite Chemical Formula

While comparing Vishnevite and Grandidierite 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 Vishnevite and Grandidierite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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Vishnevite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vishnevite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vishnevite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Vishnevite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.