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Allanite
Allanite

Forsterite
Forsterite



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Allanite
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Forsterite

Allanite and Forsterite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.40-4.20
-
Indistinct
-9999
Ca(Ce,La,Y,Ca)Al2(Fe,Al)Si3O12(OH)
 
-
-
-
3.23-3.26
Conchoidal
Perfect on {010} imperfect on {100}
6.5-7
Mg 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Allanite and Forsterite Chemical Formula

While comparing Allanite and Forsterite 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 Allanite and Forsterite chemical formula.

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Allanite and Forsterite Specific Gravity

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