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Howlite
Howlite

Zoisite
Zoisite



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Howlite
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Zoisite

Howlite and Zoisite 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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3.20-3.50
Uneven, Conchoidal, Even
Perfect {010} imperfect {100}
6-7
Ca2Al3(SiO4)3(OH)

Howlite and Zoisite Chemical Formula

While comparing Howlite and Zoisite 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 Zoisite chemical formula.

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Howlite and Zoisite Specific Gravity

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