Ruby and Periclase Physical Properties

Ruby

Periclase

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.053.7-3.9

1 7.18

1.5 Fracture

Conchoidal

Conchoidal, Brittle

1.6 Cleavage

No true cleavage

{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)

Ruby and Periclase Chemical Formula

While comparing Ruby 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 Ruby and Periclase chemical formula.

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

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Ruby and Periclase Specific Gravity

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