Poudretteite and Variscite Physical Properties

Poudretteite

Variscite

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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

2.51-2.532.42-2.58

1 7.18

1.5 Fracture

Conchoidal, Splintery

Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

None

[010] perfect

1.7 Mohs Hardness

54-5

2 10

1.8 Chemical Composition

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

AlPO₄ · 2(H₂O)

Poudretteite and Variscite Chemical Formula

While comparing Poudretteite and Variscite 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 Poudretteite and Variscite chemical formula.

Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

Compare Violet Gemstones

Poudretteite Vs Rubellite

Poudretteite Vs Sapphire

Poudretteite Vs Rutilated Quartz

Poudretteite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poudretteite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.