Grandidierite and Andradite Garnet Physical Properties

Grandidierite

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

2.85-3.003.8-3.9

1 7.18

1.5 Fracture

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

Not Available

1.6 Cleavage

Perfect

None

1.7 Mohs Hardness

7.56.5-7.5

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Ca₃Fe³⁺₂Si₃O₁₂

Grandidierite and Andradite Garnet Chemical Formula

While comparing Grandidierite 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 Grandidierite and Andradite Garnet chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂

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Grandidierite and Andradite Garnet Specific Gravity

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