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Howlite
Howlite

Selenite
Selenite



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Howlite
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Selenite

Howlite and Selenite Physical Properties

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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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-
-
-9999
-
Perfect
2
CaSO4·2H2O

Howlite and Selenite Chemical Formula

While comparing Howlite and Selenite 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 Selenite chemical formula.

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Howlite and Selenite Specific Gravity

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