Fayalite and Star Ruby Physical Properties

Fayalite

Star Ruby

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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

4.3923.95-4.10

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

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 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Fayalite and Star Ruby Chemical Formula

While comparing Fayalite and Star Ruby 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 Ruby chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)

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Fayalite and Star Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fayalite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fayalite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Fayalite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.