Almandine and Willemite Physical Properties

Almandine

Willemite

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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

3.95-4.30

3.89-4.18

1.5 Fracture

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

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

none

{0001}, {11 2 0} imperfect

1.7 Mohs Hardness

7-7.5

5.5

1.8 Chemical Composition

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

Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Almandine and Willemite Chemical Formula

While comparing Almandine and Willemite 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 Almandine and Willemite chemical formula.

Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Almandine and Willemite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine and Willemite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Willemite Optical Properties during the identification of gemstone. Specific gravity of Almandine is 3.89-4.18 whereas that of Willemite is 3.89-4.18.