Ruby and Melanite Physical Properties

Ruby

Melanite

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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

3.97-4.053.70-4.10

1 7.18

1.5 Fracture

Conchoidal

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

No true cleavage

Not Available

1.7 Mohs Hardness

96.5-7

2 10

1.8 Chemical Composition

Al ₂ O ₃

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Ruby and Melanite Chemical Formula

While comparing Ruby and Melanite 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 Melanite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Melanite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Ruby and Melanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Melanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Melanite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.70-4.10 whereas that of Melanite is 3.70-4.10.