Ruby and Kornerupine Physical Properties

Ruby

Kornerupine

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.053.25-3.45

1 7.18

1.5 Fracture

Conchoidal

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

No true cleavage

Good on {110}

1.7 Mohs Hardness

96.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Ruby and Kornerupine Chemical Formula

While comparing Ruby and Kornerupine 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 Kornerupine chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Ruby and Kornerupine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Kornerupine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Kornerupine Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.25-3.45 whereas that of Kornerupine is 3.25-3.45.