Sapphire and Londonite Physical Properties
Tenacity
Not Available
Not Available
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.95-4.03
3.34
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
None, but may exhibit parting
None
Mohs Hardness
9
Not Available
Chemical Composition
Al 2 O 3
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Sapphire and Londonite Chemical Formula
While comparing Sapphire and Londonite 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 Sapphire and Londonite chemical formula.
- Chemical formula of Sapphire- Al 2 O 3
- Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Sapphire and Londonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sapphire and Londonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Londonite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 3.34 whereas that of Londonite is 3.34.
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