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Riebeckite
Riebeckite

Gahnite
Gahnite



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Riebeckite
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Riebeckite and Gahnite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.28-3.44
4.00-4.62
1.5 Fracture
Uneven, Splintery, Brittle
Conchoidal, Uneven
1.6 Cleavage
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Indistinct parting on [111]
1.7 Mohs Hardness
5.0-6.0
7.5-8
1.8 Chemical Composition
Not Available
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Riebeckite and Gahnite Chemical Formula

While comparing Riebeckite and Gahnite 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 Riebeckite and Gahnite chemical formula.

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  • Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Riebeckite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Riebeckite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riebeckite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Riebeckite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.