Blue John and Aegirine Physical Properties

Blue John

Aegirine

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.253.50-3.60

1 7.18

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 Available6

2 10

1.8 Chemical Composition

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

Compare Blue Gemstones

Blue John Vs Ceylonite

Blue John Vs Catapleiite

Blue John Vs Chrome-Chalcedony

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.