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Fayalite
Fayalite

Lazurite
Lazurite



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Fayalite
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Lazurite

Fayalite and Lazurite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.392
Conchoidal
{010} moderate, {100} imperfect
6.5-7
Fe 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
Soluble
-
2.75
Uneven, Conchoidal
Imperfect on {110}
5.5
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Fayalite and Lazurite Chemical Formula

While comparing Fayalite and Lazurite 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 Fayalite and Lazurite chemical formula.

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Fayalite and Lazurite Specific Gravity

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