Turquoise and Forsterite Physical Properties

Turquoise

Forsterite

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Physical Properties

Tenacity

Solubility

Soluble

Durability

Specific Gravity

2.30-2.903.23-3.26

1 7.18

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Fracture

Conchoidal

Cleavage

Good to perfect_usually N/A

Perfect on {010} imperfect on {100}

Mohs Hardness

5-66.5-7

2 10

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Chemical Composition

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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

Turquoise and Forsterite Chemical Formula

While comparing Turquoise 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 Turquoise and Forsterite chemical formula.

Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O
Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Turquoise and Forsterite Specific Gravity

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