Howlite and Prase Physical Properties
Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.45-2.58
2.64-2.69
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
Cleavage
None
Not Available
Mohs Hardness
3-3.5
7
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Howlite and Prase Chemical Formula
While comparing Howlite and Prase 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 Howlite and Prase chemical formula.
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Prase- SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Howlite and Prase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Howlite and Prase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Prase Optical Properties during the identification of gemstone. Specific gravity of Howlite is 2.64-2.69 whereas that of Prase is 2.64-2.69.
