Dravite and Andradite Garnet Physical Properties

Dravite

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

3.03-3.183.8-3.9

1 7.18

1.5 Fracture

Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Not Available

1.6 Cleavage

{???} Indistinct

None

1.7 Mohs Hardness

7-7.56.5-7.5

2 10

1.8 Chemical Composition

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Ca₃Fe³⁺₂Si₃O₁₂

Dravite and Andradite Garnet Chemical Formula

While comparing Dravite 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 Dravite and Andradite Garnet chemical formula.

Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂

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Dravite and Andradite Garnet Specific Gravity

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