Rossmanite and Ruby Physical Properties

Rossmanite

Ruby

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

33.97-4.05

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal

1.6 Cleavage

None

No true cleavage

1.7 Mohs Hardness

Not Available9

2 10

1.8 Chemical Composition

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

Al ₂ O ₃

Rossmanite and Ruby Chemical Formula

While comparing Rossmanite 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 Rossmanite and Ruby chemical formula.

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

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Rossmanite and Ruby Specific Gravity

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