Amethyst and Howlite Physical Properties
Tenacity
Not Available
Not Available
Solubility
insoluble in common solvents
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65
2.45-2.58
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Indiscernible
None
Chemical Composition
SiO2
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Amethyst and Howlite Chemical Formula
While comparing Amethyst 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 Amethyst and Howlite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Amethyst and Howlite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Howlite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.45-2.58 whereas that of Howlite is 2.45-2.58.