Fayalite and Forsterite Physical Properties

Fayalite

Forsterite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

4.3923.23-3.26

1 7.18

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Fracture

Conchoidal

Cleavage

{010} moderate, {100} imperfect

Perfect on {010} imperfect on {100}

Mohs Hardness

6.5-76.5-7

2 10

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Chemical Composition

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Fayalite and Forsterite Chemical Formula

While comparing Fayalite 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 Fayalite and Forsterite chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Fayalite and Forsterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Forsterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Forsterite Optical Properties during the identification of gemstone. Specific gravity of Fayalite is 3.23-3.26 whereas that of Forsterite is 3.23-3.26.