Lazulite and Turquoise Physical Properties

Lazulite

Turquoise

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.172.30-2.90

1 7.18

1.5 Fracture

Uneven, Uneven, Gemstones of the world (2001) More from other references

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

{001} Indistinct, {???} Indistinct

Good to perfect_usually N/A

1.7 Mohs Hardness

5.55-6

2 10

1.8 Chemical Composition

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Lazulite and Turquoise Chemical Formula

While comparing Lazulite 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 Lazulite and Turquoise chemical formula.

Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references
Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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Lazulite and Turquoise Specific Gravity

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