Emerald and Norbergite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
2.67-2.78
3.177
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Imperfect on the [0001]
{???} Distinct
Mohs Hardness
7.5-8
6-6.5
Chemical Composition
Be3Al2SiO6
Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Emerald and Norbergite Chemical Formula
While comparing Emerald and Norbergite 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 Norbergite chemical formula.
- Chemical formula of Emerald- Be3Al2SiO6
- Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Emerald and Norbergite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Emerald and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.177 whereas that of Norbergite is 3.177.
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