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Iolite
Iolite

Siderite
Siderite



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Iolite
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Siderite

Iolite and Siderite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.6-2.7
-
3,1
7-7.5
Mg2Al4Si5O18
 
Brittle
-
-
3.83-3.89
Uneven, Conchoidal
Perfect on {01 1 1}
3.5-4.5
Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Iolite and Siderite Chemical Formula

While comparing Iolite and Siderite 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 Siderite chemical formula.

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Iolite and Siderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Siderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite Vs Siderite during the identification of gemstone. Specific gravity of Iolite is whereas that of Siderite is .