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Willemite and Iolite Physical Properties


Iolite and Willemite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.89-4.18   
2.6-2.7   

Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven   
Not Available   

Cleavage
{0001}, {11 2 0} imperfect   
3,1   

Mohs Hardness
5.5   
7-7.5   

Chemical Composition
Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
Mg2Al4Si5O18   

Optical Properties >>
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Willemite and Iolite Chemical Formula

While comparing Willemite and Iolite 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 Willemite and Iolite chemical formula.

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Willemite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Willemite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Willemite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Willemite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.

Red Gemstones

Red Gemstones


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