Fayalite and Star Sapphire Physical Properties

Fayalite

Star Sapphire

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.3923.90-4.05

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Not Available

1.6 Cleavage

{010} moderate, {100} imperfect

Not Available

1.7 Mohs Hardness

6.5-7Not Available

2 10

1.8 Chemical Composition

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

Al 2O 3Ulrich Henn and Claudio C.

Fayalite and Star Sapphire Chemical Formula

While comparing Fayalite and Star Sapphire 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 Star Sapphire chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Star Sapphire- Al 2O 3Ulrich Henn and Claudio C.

Compare Yellow Gemstones

Fayalite Vs Gadolinium Gallium Garnet

Fayalite Vs Hackmanite

Fayalite Vs Garnet

Fayalite and Star Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Fayalite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.