Emerald and Verdelite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
2.67-2.78
2.90-3.40
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Imperfect on the [0001]
Not Available
Mohs Hardness
7.5-8
7-7.5
Chemical Composition
Be3Al2SiO6
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Emerald and Verdelite Chemical Formula
While comparing Emerald and Verdelite 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 Verdelite chemical formula.
- Chemical formula of Emerald- Be3Al2SiO6
- Chemical formula of Verdelite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Emerald and Verdelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Emerald and Verdelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Verdelite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 2.90-3.40 whereas that of Verdelite is 2.90-3.40.
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