Staurolite and Coral Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.7-3.8
2.60-2.70
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Irregular, Irregular, Gemstones of the world (2001)
Cleavage
Distinct on {010}
Not Available
Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
CaCO 3Ulrich Henn and Claudio C.
Staurolite and Coral Chemical Formula
While comparing Staurolite and Coral 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 Coral chemical formula.
- Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
- Chemical formula of Coral- CaCO 3Ulrich Henn and Claudio C.
Staurolite and Coral Specific Gravity
Another important criteria for qualitative analysis of gemstones is Staurolite and Coral Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Coral Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 2.60-2.70 whereas that of Coral is 2.60-2.70.