Ruby and Andesine Physical Properties

Ruby

Andesine

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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

3.97-4.052.65-2.69

1 7.18

1.5 Fracture

Conchoidal

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

No true cleavage

Perfect on {001}, good on {010}

1.7 Mohs Hardness

96-6.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

(Na,Ca)Al_1-2Si_3-2O₈

Ruby and Andesine Chemical Formula

While comparing Ruby and Andesine 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 Andesine chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Ruby and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Andesine Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.65-2.69 whereas that of Andesine is 2.65-2.69.