Pargasite and Andradite Garnet Physical Properties

Pargasite

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

3.04-3.263.8-3.9

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Not Available

1.6 Cleavage

{110} perfect

None

1.7 Mohs Hardness

5-66.5-7.5

2 10

1.8 Chemical Composition

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Ca₃Fe³⁺₂Si₃O₁₂

Pargasite and Andradite Garnet Chemical Formula

While comparing Pargasite 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 Pargasite and Andradite Garnet chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂

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Pargasite and Andradite Garnet Specific Gravity

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