Almandine and Jet Physical Properties

Almandine

Jet

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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

1.19-1.35

1.5 Fracture

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

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

1.6 Cleavage

none

Not Available

1.7 Mohs Hardness

7-7.5

2.5-4

1.8 Chemical Composition

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

Not Available

Almandine and Jet Chemical Formula

While comparing Almandine and Jet 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 Jet chemical formula.

Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Almandine and Jet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine and Jet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Jet Optical Properties during the identification of gemstone. Specific gravity of Almandine is 1.19-1.35 whereas that of Jet is 1.19-1.35.