Grossular Garnet and Alunite Physical Properties

Grossular Garnet

Alunite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.62.6-2.9

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven

1.6 Cleavage

None

On {0001}, perfect

1.7 Mohs Hardness

6.5-7.53.5-4

2 10

1.8 Chemical Composition

Ca₃Al₂Si₃O₁₂

KAl3(SO4)2(OH)6

Grossular Garnet and Alunite Chemical Formula

While comparing Grossular Garnet and Alunite 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 Alunite chemical formula.

Chemical formula of Grossular Garnet- Ca₃Al₂Si₃O₁₂
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Grossular Garnet and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grossular Garnet and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grossular Garnet and Alunite Optical Properties during the identification of gemstone. Specific gravity of Grossular Garnet is 2.6-2.9 whereas that of Alunite is 2.6-2.9.