Elbaite and Ruby Physical Properties

Elbaite

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

2.90-3.10

3.97-4.05

1.5 Fracture

Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Conchoidal

1.6 Cleavage

Poor/indistinct on {1120} and {1011}

No true cleavage

1.7 Mohs Hardness

1.8 Chemical Composition

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references

Al ₂ O ₃

Elbaite and Ruby Chemical Formula

While comparing Elbaite 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 Elbaite and Ruby chemical formula.

Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Chemical formula of Ruby- Al ₂ O ₃

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Elbaite and Ruby Specific Gravity

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