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Chondrodite
Chondrodite

Blue John
Blue John



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Chondrodite
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Blue John

Chondrodite and Blue John Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Soluble
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.10-3.20
3.00-3.25
1.5 Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Not Available
1.6 Cleavage
Poor to good on (001)
Not Available
1.7 Mohs Hardness
6-6.5
Not Available
1.8 Chemical Composition
(Mg,Fe) 5(SiO 4) 2(F,OH) 2Ulrich Henn and Claudio C.
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Chondrodite and Blue John Chemical Formula

While comparing Chondrodite and Blue John 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 Chondrodite and Blue John chemical formula.

  • Chemical formula of Chondrodite- (Mg,Fe) 5(SiO 4) 2(F,OH) 2Ulrich Henn and Claudio C.
  • Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Chondrodite and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chondrodite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chondrodite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Chondrodite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.