Poudretteite and Almandine Physical Properties

Poudretteite

Almandine

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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

2.51-2.53

3.95-4.30

1.5 Fracture

Conchoidal, Splintery

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

None

none

1.7 Mohs Hardness

7-7.5

1.8 Chemical Composition

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

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Poudretteite and Almandine Chemical Formula

While comparing Poudretteite and Almandine 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 Almandine chemical formula.

Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Compare Violet Gemstones

Poudretteite Vs Rubellite

Poudretteite Vs Rutilated Quartz

Poudretteite Vs Sapphire

Poudretteite and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Poudretteite and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Poudretteite and Almandine Optical Properties during the identification of gemstone. Specific gravity of Poudretteite is 3.95-4.30 whereas that of Almandine is 3.95-4.30.