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Andesine
Andesine

Andradite
Andradite



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Andesine
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Andradite

Andesine and Andradite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.65-2.693.70-4.10
Amber
1 7.18
1.5 Fracture
Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Perfect on {001}, good on {010}
none
1.7 Mohs Hardness
6-6.56.5-7
Amber
2 10
1.8 Chemical Composition
(Na,Ca)Al1-2Si3-2O8
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Andesine and Andradite Chemical Formula

While comparing Andesine 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 Andesine and Andradite chemical formula.

  • Chemical formula of Andesine- (Na,Ca)Al1-2Si3-2O8
  • Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Andesine and Andradite Specific Gravity

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