Emerald and Howlite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
2.67-2.78
2.45-2.58
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Imperfect on the [0001]
None
Mohs Hardness
7.5-8
3-3.5
Chemical Composition
Be3Al2SiO6
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Emerald and Howlite Chemical Formula
While comparing Emerald and Howlite 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 Howlite chemical formula.
- Chemical formula of Emerald- Be3Al2SiO6
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Emerald and Howlite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Emerald and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Howlite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 2.45-2.58 whereas that of Howlite is 2.45-2.58.
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