Andradite Garnet and Sillimanite Physical Properties

Andradite 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

3.8-3.93.20-3.26

1 7.18

1.5 Fracture

Not Available

Splintery

1.6 Cleavage

None

{010} perfect

1.7 Mohs Hardness

6.5-7.56-7.5

2 10

1.8 Chemical Composition

Ca₃Fe³⁺₂Si₃O₁₂

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

Andradite Garnet and Sillimanite Chemical Formula

While comparing Andradite 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 Andradite Garnet and Sillimanite chemical formula.

Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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Andradite Garnet Vs Lemon quartz

Andradite Garnet Vs Rutilated topaz

Andradite Garnet and Sillimanite Specific Gravity

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