Andradite Garnet and Spinel Physical Properties

Andradite Garnet

Spinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

3.8-3.93.64-3.66

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

None

None, but may exhibit slight parting

1.7 Mohs Hardness

6.5-7.58

2 10

1.8 Chemical Composition

Ca₃Fe³⁺₂Si₃O₁₂

MgAl₂O₄

Andradite Garnet and Spinel Chemical Formula

While comparing Andradite Garnet and Spinel 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 Spinel chemical formula.

Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂
Chemical formula of Spinel- MgAl₂O₄

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Andradite Garnet and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite Garnet and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite Garnet and Spinel Optical Properties during the identification of gemstone. Specific gravity of Andradite Garnet is 3.64-3.66 whereas that of Spinel is 3.64-3.66.