Almandine Garnet and Sillimanite Physical Properties

Almandine Garnet

Sillimanite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.33.20-3.26

1 7.18

1.5 Fracture

Not Available

Splintery

1.6 Cleavage

None.

{010} perfect

1.7 Mohs Hardness

7.5-8.56-7.5

2 10

1.8 Chemical Composition

Fe₃Al₂Si₃O₁₂

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Almandine Garnet and Sillimanite Chemical Formula

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

Chemical formula of Almandine Garnet- Fe₃Al₂Si₃O₁₂
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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Almandine Garnet Vs Mystic topaz

Almandine Garnet and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Almandine Garnet and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine Garnet and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Almandine Garnet is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.