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Staurolite and Moldavite Physical Properties


Moldavite and Staurolite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.7-3.8   
2.32-2.38   

Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle   
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)   

Cleavage
Distinct on {010}   
Not Available   

Mohs Hardness
7-7.5   
5.5   

Chemical Composition
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.   
SiO 2(+Al 2O 3)Walter Schumann , Gemstones of the world (2001)   

Optical Properties >>
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Staurolite and Moldavite Chemical Formula

While comparing Staurolite and Moldavite 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 Moldavite chemical formula.

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Staurolite and Moldavite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Moldavite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Moldavite Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 2.32-2.38 whereas that of Moldavite is 2.32-2.38.

Brown Gemstones

Brown Gemstones


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