Variscite and Andalusite Physical Properties

Variscite

Andalusite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.42-2.583.05-3.21

1 7.18

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Fracture

Conchoidal, Splintery, ConchoidalWalter Schumann

Uneven, Subconchoidal, Splintery

Cleavage

[010] perfect

Good on {110}, poor on {100}

Mohs Hardness

4-57.5

2 10

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Chemical Composition

AlPO₄ · 2(H₂O)

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Variscite and Andalusite Chemical Formula

While comparing Variscite and Andalusite 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 Variscite and Andalusite chemical formula.

Chemical formula of Variscite- AlPO₄ · 2(H₂O)
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Compare Gems for Virgo

Variscite Vs Tanzanite

Variscite Vs Sugilite

Variscite Vs Jasper

Variscite and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Variscite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Variscite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Variscite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.