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Staurolite
Staurolite

Chalcedony
Chalcedony



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Staurolite
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Chalcedony

Staurolite and Chalcedony Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.7-3.82.55-2.70
Amber
1 7.18
1.5 Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
1.6 Cleavage
Distinct on {010}
Absent
1.7 Mohs Hardness
7-7.56.5-7
Amber
2 10
1.8 Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
SiO2

Staurolite and Chalcedony Chemical Formula

While comparing Staurolite 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 Staurolite and Chalcedony chemical formula.

  • Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
  • Chemical formula of Chalcedony- SiO2

Staurolite and Chalcedony Specific Gravity

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