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Augelite
Augelite

Andradite
Andradite



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Augelite
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Augelite and Andradite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.70-2.75
3.70-4.10
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
From the Greek for luster, for its pearly luster on the cleavage.
none
1.7 Mohs Hardness
4.5-5
6.5-7
1.8 Chemical Composition
Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Augelite and Andradite Chemical Formula

While comparing Augelite and Andradite 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 Augelite and Andradite chemical formula.

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

Augelite and Andradite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augelite and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augelite and Andradite Optical Properties during the identification of gemstone. Specific gravity of Augelite is 3.70-4.10 whereas that of Andradite is 3.70-4.10.