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Staurolite
Staurolite

Eilat stone
Eilat stone



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Staurolite
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Eilat stone

Staurolite and Eilat stone Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.7-3.8-9999
1 7.18
👆🏻

Fracture

Subconchoidal, Conchoidal
-

Cleavage

Distinct on {010}
-

Mohs Hardness

7-7.5-9999
2 10
👆🏻

Chemical Composition

(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Cu3(PO4)(OH)3

Staurolite and Eilat stone Chemical Formula

While comparing Staurolite and Eilat stone 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 Eilat stone chemical formula.

  • Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
  • Chemical formula of Eilat stone- Cu3(PO4)(OH)3

Staurolite and Eilat stone Specific Gravity

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