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Blue John
Blue John

Tsavorite
Tsavorite



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Blue John
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Tsavorite

Blue John and Tsavorite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.00-3.253.55-3.73
1 7.18
👆🏻

Fracture

-
-

Cleavage

Perfect
Indiscernible

Mohs Hardness

-99997-7.5
2 10
👆🏻

Chemical Composition

CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
Ca3Al2(SiO4)3

Blue John and Tsavorite Chemical Formula

While comparing Blue John and Tsavorite 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 Tsavorite chemical formula.

  • Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Tsavorite- Ca3Al2(SiO4)3

Blue John and Tsavorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Tsavorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Tsavorite Optical Properties during the identification of gemstone. Specific gravity of Blue John is 3.55-3.73 whereas that of Tsavorite is 3.55-3.73.