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Blue John
Blue John

Spodumene
Spodumene



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Blue John
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Spodumene

Blue John and Spodumene Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.00-3.25
-
Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
 
Brittle
insoluble
-
3.15-3.21
Uneven, Subconchoidal
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
6-7
LiAlSi2O6

Blue John and Spodumene Chemical Formula

While comparing Blue John and Spodumene 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 Spodumene chemical formula.

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Blue John and Spodumene Specific Gravity

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