Lazurite and Ruby Physical Properties

Lazurite

Ruby

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.753.97-4.05

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

Conchoidal

1.6 Cleavage

Imperfect on {110}

No true cleavage

1.7 Mohs Hardness

5.59

2 10

1.8 Chemical Composition

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Al ₂ O ₃

Lazurite and Ruby Chemical Formula

While comparing Lazurite and Ruby 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 Lazurite and Ruby chemical formula.

Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Chemical formula of Ruby- Al ₂ O ₃

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Lazurite and Ruby Specific Gravity

Another important criteria for qualitative analysis of gemstones is Lazurite and Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Lazurite and Ruby Optical Properties during the identification of gemstone. Specific gravity of Lazurite is 3.97-4.05 whereas that of Ruby is 3.97-4.05.