Staurolite and Kunzite Physical Properties

Staurolite

Kunzite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.7-3.83.15-3.21

1 7.18

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Fracture

Subconchoidal, Conchoidal

Cleavage

Distinct on {010}

1,2 prismatic

Mohs Hardness

7-7.56-7

2 10

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Chemical Composition

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

LiAlSi₂O₆

Staurolite and Kunzite Chemical Formula

While comparing Staurolite and Kunzite 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 Kunzite chemical formula.

Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Chemical formula of Kunzite- LiAlSi₂O₆

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Staurolite and Kunzite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Staurolite and Kunzite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Staurolite and Kunzite Optical Properties during the identification of gemstone. Specific gravity of Staurolite is 3.15-3.21 whereas that of Kunzite is 3.15-3.21.