Andradite and Augelite Physical Properties

Andradite

Augelite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.70-4.102.70-2.75

1 7.18

1.5 Fracture

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

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

none

From the Greek for luster, for its pearly luster on the cleavage.

1.7 Mohs Hardness

6.5-74.5-5

2 10

1.8 Chemical Composition

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

Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Andradite and Augelite Chemical Formula

While comparing Andradite and Augelite 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 Augelite chemical formula.

Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

Andradite Vs Astrophyllite

Andradite Vs Aragonite

Andradite Vs Augite

Andradite and Augelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Augelite Optical Properties during the identification of gemstone. Specific gravity of Andradite is 2.70-2.75 whereas that of Augelite is 2.70-2.75.