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Howlite
Howlite

Jet
Jet



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Howlite
X
Jet

Howlite and Jet Physical Properties

Jet
Jet
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
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-
-
2.45-2.58
Conchoidal
None
3-3.5
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
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-
-
1.19-1.35
ConchoidalWalter Schumann
None
2.5-4
C

Howlite and Jet Chemical Formula

While comparing Howlite and Jet 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 Howlite and Jet chemical formula.

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Howlite and Jet Specific Gravity

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