Ruby and Rossmanite Physical Properties

Ruby

Rossmanite

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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

1 7.18

1.5 Fracture

Conchoidal

Brittle, Metallic

1.6 Cleavage

No true cleavage

None

1.7 Mohs Hardness

9Not Available

2 10

1.8 Chemical Composition

Al ₂ O ₃

◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Ruby and Rossmanite Chemical Formula

While comparing Ruby and Rossmanite 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 Rossmanite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Rossmanite- ◻(LiAl 2)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Ruby and Rossmanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Rossmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Rossmanite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3 whereas that of Rossmanite is 3.