Petalite and Turquoise Physical Properties

Petalite

Turquoise

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

insoluble

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.402.30-2.90

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

Perfect on {001}, poor on {201} with 38.5° angle between the two

Good to perfect_usually N/A

1.7 Mohs Hardness

6-6.55-6

2 10

1.8 Chemical Composition

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Petalite and Turquoise Chemical Formula

While comparing Petalite and Turquoise 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 Petalite and Turquoise chemical formula.

Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Compare Gems Found In Australia

Petalite Vs Sapphire

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Petalite Vs Scheelite

Petalite and Turquoise Specific Gravity

Another important criteria for qualitative analysis of gemstones is Petalite and Turquoise Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petalite and Turquoise Optical Properties during the identification of gemstone. Specific gravity of Petalite is 2.30-2.90 whereas that of Turquoise is 2.30-2.90.