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Tourmaline and Agrellite Physical Properties


Agrellite and Tourmaline Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.85-3.35   
2.88   

Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)   
Not Available   

Cleavage
Indistinct   
perfect [110]   

Mohs Hardness
7-7.5   
5.5   

Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.   
NaCa2Si4O10F   

Optical Properties >>
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Tourmaline and Agrellite Chemical Formula

While comparing Tourmaline and Agrellite 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 Tourmaline and Agrellite chemical formula.

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Tourmaline and Agrellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tourmaline and Agrellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Agrellite Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 2.88 whereas that of Agrellite is 2.88.

Semi Precious

Semi Precious


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