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Andradite
Andradite

Sanidine
Sanidine



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Andradite and Sanidine Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.70-4.10
2.54-2.61
1.5 Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Uneven, Gems, Sixth Edition (2006)
1.6 Cleavage
none
{001} Perfect, {010} Good
1.7 Mohs Hardness
6.5-7
6
1.8 Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
KAlSi 3O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Andradite and Sanidine Chemical Formula

While comparing Andradite and Sanidine 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 Sanidine chemical formula.

  • Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  • Chemical formula of Sanidine- KAlSi 3O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Andradite and Sanidine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Sanidine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Sanidine Optical Properties during the identification of gemstone. Specific gravity of Andradite is 2.54-2.61 whereas that of Sanidine is 2.54-2.61.