Howlite and Fire Agate Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.45-2.58
  
2.60-2.64
  
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
  
Cleavage
None
  
Absent
  
Mohs Hardness
3-3.5
  
6.5-7
  
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
SiO 2Arthur Thomas , Gemstones (2009)
  
Howlite and Fire Agate Chemical Formula
While comparing Howlite and Fire Agate 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 Fire Agate chemical formula.
- Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Fire Agate- SiO 2Arthur Thomas , Gemstones (2009)
Howlite and Fire Agate Specific Gravity
Another important criteria for qualitative analysis of gemstones is Howlite and Fire Agate Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Fire Agate Optical Properties during the identification of gemstone. Specific gravity of Howlite is 2.60-2.64 whereas that of Fire Agate is 2.60-2.64.