Ruby and Boracite Physical Properties

Ruby

Boracite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.97-4.052.95-2.96

1 7.18

1.5 Fracture

Conchoidal

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

1.6 Cleavage

No true cleavage

None

1.7 Mohs Hardness

97-7.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Ruby and Boracite Chemical Formula

While comparing Ruby and Boracite 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 Boracite chemical formula.

Chemical formula of Ruby- Al ₂ O ₃
Chemical formula of Boracite- Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Ruby and Boracite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Boracite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Boracite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.95-2.96 whereas that of Boracite is 2.95-2.96.