Howlite and Pyrope Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
insoluble in water
Durability
Not Available
Not Available
Specific Gravity
2.45-2.58
3.62-3.87
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Mohs Hardness
3-3.5
7-7.5
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Howlite and Pyrope Chemical Formula
While comparing Howlite and Pyrope 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 Pyrope chemical formula.
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Pyrope- Mg 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Howlite and Pyrope Specific Gravity
Another important criteria for qualitative analysis of gemstones is Howlite and Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Pyrope Optical Properties during the identification of gemstone. Specific gravity of Howlite is 3.62-3.87 whereas that of Pyrope is 3.62-3.87.