Sapphire and Periclase Physical Properties

Sapphire

Periclase

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.033.7-3.9

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Conchoidal, Brittle

1.6 Cleavage

None, but may exhibit parting

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

1.7 Mohs Hardness

95.5-6

2 10

1.8 Chemical Composition

Al ₂ O ₃

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Sapphire and Periclase Chemical Formula

While comparing Sapphire 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 Sapphire and Periclase chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Periclase- MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

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Sapphire and Periclase Specific Gravity

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