Vishnevite and Hercynite Physical Properties

Vishnevite

Hercynite

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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 Available4.39

1 7.18

1.5 Fracture

Brittle, Uneven

ConchoidalGemdat.org, Uneven

1.6 Cleavage

Perfect

{111} Indistinct, {111} Indistinct, {111} Indistinct

1.7 Mohs Hardness

5-67.5-8

2 10

1.8 Chemical Composition

Not Available

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Vishnevite and Hercynite Chemical Formula

While comparing Vishnevite and Hercynite 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 Hercynite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

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Vishnevite and Hercynite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vishnevite and Hercynite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vishnevite and Hercynite Optical Properties during the identification of gemstone. Specific gravity of Vishnevite is 4.39 whereas that of Hercynite is 4.39.