Emerald and Fayalite Physical Properties

Emerald

Fayalite

Fayalite and Emerald Physical Properties

Physical Properties

Tenacity

Not Available

Solubility

Not Available

Durability

Hard

Not Available

Specific Gravity

2.67-2.78

4.392

Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

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

Cleavage

Imperfect on the [0001]

{010} moderate, {100} imperfect

Mohs Hardness

7.5-8

6.5-7

Chemical Composition

Be₃Al₂SiO₆

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

Optical Properties >>

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Emerald and Fayalite Chemical Formula

While comparing Emerald and Fayalite 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 Emerald and Fayalite chemical formula.

Chemical formula of Emerald- Be₃Al₂SiO₆
Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Emerald and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 4.392 whereas that of Fayalite is 4.392.