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Ettringite
Ettringite

Blue John
Blue John



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Ettringite
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Blue John

Ettringite and Blue John Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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Partially soluble in water
-
1.77
-
Perfect on {10 1 0}
2-2.5
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
 
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-
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3.00-3.25
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Perfect
-9999
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Ettringite and Blue John Chemical Formula

While comparing Ettringite 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 Ettringite and Blue John chemical formula.

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Ettringite and Blue John Specific Gravity

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