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Augelite
Augelite

Chalcedony
Chalcedony



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Augelite
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Augelite and Chalcedony Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.70-2.75
2.55-2.70
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
1.6 Cleavage
From the Greek for luster, for its pearly luster on the cleavage.
Absent
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)
SiO2

Augelite and Chalcedony Chemical Formula

While comparing Augelite and Chalcedony 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 Chalcedony chemical formula.

  • Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Chalcedony- SiO2

Augelite and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augelite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augelite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Augelite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.