Grossular Garnet and Spinel Physical Properties

Grossular 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

3.63.64-3.66

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

Ca₃Al₂Si₃O₁₂

MgAl₂O₄

Grossular Garnet and Spinel Chemical Formula

While comparing Grossular 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 Grossular Garnet and Spinel chemical formula.

Chemical formula of Grossular Garnet- Ca₃Al₂Si₃O₁₂
Chemical formula of Spinel- MgAl₂O₄

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Grossular Garnet and Spinel Specific Gravity

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