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Tourmaline and Londonite Physical Properties


Londonite and Tourmaline Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.85-3.35   
3.34   

Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)   
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal   

Cleavage
Indistinct   
None   

Mohs Hardness
7-7.5   
Not Available   

Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.   
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)   

Optical Properties >>
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Tourmaline and Londonite Chemical Formula

While comparing Tourmaline 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 Tourmaline and Londonite chemical formula.

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Tourmaline and Londonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tourmaline and Londonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Londonite Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 3.34 whereas that of Londonite is 3.34.

Semi Precious

Semi Precious


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