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Howlite
Howlite

Andradite
Andradite



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Howlite
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Andradite

Howlite and Andradite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
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
 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Howlite and Andradite Chemical Formula

While comparing Howlite and Andradite 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 Andradite chemical formula.

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Howlite and Andradite Specific Gravity

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