Staurolite and Chrysoberyl Physical Properties

Staurolite

Chrysoberyl

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.7-3.83.69-3.81

1 7.18

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Fracture

Subconchoidal, Conchoidal

Uneven, Conchoidal to uneven, ConchoidalWalter Schumann

Cleavage

Distinct on {010}

Distinct on {110}, imperfect on {010}, poor on {001}

Mohs Hardness

7-7.58.5

2 10

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Chemical Composition

(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.

BeAl ₂ O ₄

Staurolite and Chrysoberyl Chemical Formula

While comparing Staurolite and Chrysoberyl 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 Chrysoberyl chemical formula.

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

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Staurolite and Chrysoberyl Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Chrysoberyl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Chrysoberyl Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 3.69-3.81 whereas that of Chrysoberyl is 3.69-3.81.