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Blue John
Blue John

Gaspeite
Gaspeite



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Blue John
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Gaspeite

Blue John and Gaspeite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
HCl soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.00-3.253.71
Amber
1 7.18
1.5 Fracture
Not Available
Uneven
1.6 Cleavage
Not Available
{10 1 1} Good
1.7 Mohs Hardness
Not Available4.5-5
Amber
2 10
1.8 Chemical Composition
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
(Ni,Mg,Fe++)CO3

Blue John and Gaspeite Chemical Formula

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

  • Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Gaspeite- (Ni,Mg,Fe++)CO3

Blue John and Gaspeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Gaspeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Gaspeite Optical Properties during the identification of gemstone. Specific gravity of Blue John is 3.71 whereas that of Gaspeite is 3.71.