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Emerald and Boulder Opal Physical Properties


Boulder Opal and Emerald Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Hard   
Not Available   

Specific Gravity
2.67-2.78   
1.98-2.25   

Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
Imperfect on the [0001]   
Not Available   

Mohs Hardness
7.5-8   
5-6.5   

Chemical Composition
Be3Al2SiO6   
SiO 2 + H 2OUlrich Henn and Claudio C.   

Optical Properties >>
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Emerald and Boulder Opal Chemical Formula

While comparing Emerald and Boulder Opal 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 Emerald and Boulder Opal chemical formula.

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Emerald and Boulder Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Emerald and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Boulder Opal Optical Properties during the identification of gemstone. Specific gravity of Emerald is 1.98-2.25 whereas that of Boulder Opal is 1.98-2.25.

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