Andradite and Albite Physical Properties

Andradite

Albite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.70-4.102.60-2.65

1 7.18

1.5 Fracture

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Uneven, Gems, Sixth Edition (2006), Uneven, Conchoidal

1.6 Cleavage

none

Perfect on {001}, very good on {010}, imperfect on {110}

1.7 Mohs Hardness

6.5-76-6.5

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Andradite and Albite Chemical Formula

While comparing Andradite and Albite 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 Andradite and Albite chemical formula.

Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Albite- NaAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

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Andradite and Albite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Albite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Albite Optical Properties during the identification of gemstone. Specific gravity of Andradite is 2.60-2.65 whereas that of Albite is 2.60-2.65.