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Topaz and Celestine Physical Properties


Celestine and Topaz Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.49-3.57   
3.90-4.00   

Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle   
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal   

Cleavage
[001] Perfect   
Perfect on {001}, good on {210}, poor on {010}   

Mohs Hardness
8   
3-3.5   

Chemical Composition
Al2SiO4(F,OH)2   
SrSO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Topaz and Celestine Chemical Formula

While comparing Topaz and Celestine 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 Topaz and Celestine chemical formula.

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Topaz and Celestine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Topaz and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Celestine Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.90-4.00 whereas that of Celestine is 3.90-4.00.

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