Turquoise and Periclase Physical Properties

Turquoise

Periclase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.30-2.903.7-3.9

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Conchoidal, Brittle

1.6 Cleavage

Good to perfect_usually N/A

{001} perfect; {111} imperfect, may exhibit parting on , {011}

1.7 Mohs Hardness

5-65.5-6

2 10

1.8 Chemical Composition

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Turquoise and Periclase Chemical Formula

While comparing Turquoise and Periclase 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 Periclase chemical formula.

Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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Turquoise and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Turquoise and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Turquoise and Periclase Optical Properties during the identification of gemstone. Specific gravity of Turquoise is 3.7-3.9 whereas that of Periclase is 3.7-3.9.