Londonite and Ruby Physical Properties

Londonite

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

3.343.97-4.05

1 7.18

1.5 Fracture

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

Conchoidal

1.6 Cleavage

None

No true cleavage

1.7 Mohs Hardness

Not Available9

2 10

1.8 Chemical Composition

(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)

Al ₂ O ₃

Londonite and Ruby Chemical Formula

While comparing Londonite 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 Londonite and Ruby chemical formula.

Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Ruby- Al ₂ O ₃

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Londonite and Ruby Specific Gravity

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