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Londonite
Londonite

Demantoid
Demantoid



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Londonite
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Demantoid

Londonite and Demantoid Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.343.77-3.95
Amber
1 7.18
1.5 Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Not Available
1.6 Cleavage
None
Not Available
1.7 Mohs Hardness
Not Available6.5
Amber
2 10
1.8 Chemical Composition
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Londonite and Demantoid Chemical Formula

While comparing Londonite and Demantoid 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 Demantoid 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 Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Londonite and Demantoid Specific Gravity

Another important criteria for qualitative analysis of gemstones is Londonite and Demantoid Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Demantoid Optical Properties during the identification of gemstone. Specific gravity of Londonite is 3.77-3.95 whereas that of Demantoid is 3.77-3.95.