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Iolite and Prehnite Physical Properties


Prehnite and Iolite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.6-2.7   
2.80-2.95   

Fracture
Not Available   
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic   

Cleavage
3,1   
Distinct on [001]   

Mohs Hardness
7-7.5   
6-6.5   

Chemical Composition
Mg2Al4Si5O18   
Ca2Al2Si3O12(OH)   

Optical Properties >>
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Iolite and Prehnite Chemical Formula

While comparing Iolite and Prehnite 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 Iolite and Prehnite chemical formula.

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Iolite and Prehnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.

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