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Feldspar and Howlite Physical Properties


Howlite and Feldspar Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.56-2.75   
2.45-2.58   

Fracture
Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)   
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal   

Cleavage
two or three   
None   

Mohs Hardness
6-6.5   
3-3.5   

Chemical Composition
Not Available   
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Feldspar and Howlite Chemical Formula

While comparing Feldspar 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 Feldspar and Howlite chemical formula.

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Feldspar and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Feldspar and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Feldspar and Howlite Optical Properties during the identification of gemstone. Specific gravity of Feldspar is 2.45-2.58 whereas that of Howlite is 2.45-2.58.

Green Gemstones

Green Gemstones


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