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Schorl and Sugilite Physical Properties


Sugilite and Schorl Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.18-3.22   
2.69-2.79   

Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
{1011} Indistinct   
Poor on {0001}   

Mohs Hardness
Not Available   
5.5-6.5   

Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)   
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Schorl and Sugilite Chemical Formula

While comparing Schorl and Sugilite 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 Schorl and Sugilite chemical formula.

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Schorl and Sugilite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.

Black Gemstones

Black Gemstones


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