Blue John and Cobaltite Physical Properties

Blue John

Cobaltite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.256.3

1 7.18

1.5 Fracture

Not Available

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

1.6 Cleavage

Not Available

{100} Good, {010} Good, {001} Good

1.7 Mohs Hardness

Not Available5.5

2 10

1.8 Chemical Composition

CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)

CoAsSAnthony et al , Handbook of mineralogy (2001)

Blue John and Cobaltite Chemical Formula

While comparing Blue John and Cobaltite 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 Cobaltite chemical formula.

Chemical formula of Blue John- CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

Compare Blue Gemstones

Blue John Vs Chrome-Chalcedony

Blue John Vs Catapleiite

Blue John Vs Ceylonite

Blue John and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Blue John is 6.3 whereas that of Cobaltite is 6.3.