Almandine and Diaspore Physical Properties

Almandine

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.30

3.30-3.40

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

none

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

7-7.5

6.5-7

1.8 Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Almandine and Diaspore Chemical Formula

While comparing Almandine and Diaspore 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 Diaspore chemical formula.

Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Almandine and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Almandine is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.