Andradite and Almandine Garnet Physical Properties

Andradite

Almandine Garnet

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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

3.70-4.104.3

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

none

None.

1.7 Mohs Hardness

6.5-77.5-8.5

2 10

1.8 Chemical Composition

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

Fe₃Al₂Si₃O₁₂

Andradite and Almandine Garnet Chemical Formula

While comparing Andradite and Almandine Garnet 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 Andradite and Almandine Garnet chemical formula.

Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Almandine Garnet- Fe₃Al₂Si₃O₁₂

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Andradite Vs Astrophyllite

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Andradite and Almandine Garnet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Almandine Garnet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Almandine Garnet Optical Properties during the identification of gemstone. Specific gravity of Andradite is 4.3 whereas that of Almandine Garnet is 4.3.