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Tortoiseshell
Tortoiseshell

Howlite
Howlite



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Tortoiseshell
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Howlite

Tortoiseshell and Howlite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.25-1.35
-
None
-9999
-
 
-
-
-
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

Tortoiseshell and Howlite Chemical Formula

While comparing Tortoiseshell and Howlite 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 Tortoiseshell and Howlite chemical formula.

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Tortoiseshell and Howlite Specific Gravity

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