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Blue John
Blue John

Aegirine
Aegirine



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Blue John
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Aegirine

Blue John and Aegirine Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.00-3.25
3.50-3.60
1.5 Fracture
Not Available
Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
1.6 Cleavage
Not Available
Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}
1.7 Mohs Hardness
Not Available
6
1.8 Chemical Composition
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

Blue John and Aegirine Chemical Formula

While comparing Blue John and Aegirine 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 Aegirine chemical formula.

  • Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Aegirine- (Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

Blue John and Aegirine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Aegirine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Aegirine Optical Properties during the identification of gemstone. Specific gravity of Blue John is 3.50-3.60 whereas that of Aegirine is 3.50-3.60.

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