Tourmaline and Andradite Garnet Physical Properties

Tourmaline

Andradite Garnet

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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

2.85-3.353.8-3.9

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Not Available

1.6 Cleavage

Indistinct

None

1.7 Mohs Hardness

7-7.56.5-7.5

2 10

1.8 Chemical Composition

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

Ca₃Fe³⁺₂Si₃O₁₂

Tourmaline and Andradite Garnet Chemical Formula

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

Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂

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Tourmaline and Andradite Garnet Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tourmaline and Andradite Garnet Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Andradite Garnet Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 3.8-3.9 whereas that of Andradite Garnet is 3.8-3.9.