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Jet
Jet

Bytownite
Bytownite



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Jet
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Bytownite

Jet and Bytownite Physical Properties

Jet
Jet
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Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

1.19-1.352.72-2.75
1 7.18
👆🏻

Fracture

ConchoidalWalter Schumann
Uneven

Cleavage

None
Perfect on [001], good on [010], imperfect on [110]

Mohs Hardness

2.5-46-6.5
2 10
👆🏻

Chemical Composition

C
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Jet and Bytownite Chemical Formula

While comparing Jet and Bytownite 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 Jet and Bytownite chemical formula.

  • Chemical formula of Jet- C
  • Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael O’Donoghue , Gems, Sixth Edition (2006)

Jet and Bytownite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jet and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jet and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Jet is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.