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Sellaite
Sellaite

Sard
Sard



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Sellaite
X
Sard

Sellaite and Sard Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.14-3.16
Conchoidal
Perfect on {010} and {110}
5-5.5
MgF 2Ulrich Henn and Claudio C.
 
-
-
-
2.58-2.63
Conchoidal
None
6.5-7
SiO 2Ulrich Henn and Claudio C.

Sellaite and Sard Chemical Formula

While comparing Sellaite and Sard 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 Sellaite and Sard chemical formula.

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Sellaite and Sard Specific Gravity

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