Origin
Southern and central Africa
  
Australia, Southern and central Africa, green, brown, Australia, France, green, brown, Australia, France
  
Color
White, Colorless, Blue, Red, Green, Yellow, Violet, pink, Violet
  
Green, Colorless, gray, Yellow, White
  
Streak
Not Available
  
Colorless
  
For which Rashi?
Not Available
  
Libra
  
Planet
Not Available
  
Venus
  
Element of Planets
Not Available
  
Earth
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Not Available
  
Receptive
  
Deities
Not Available
  
Freya
  
Not to wear with
Not Available
  
Not Available
  
Powers
Not Available
  
Not Available
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.27-2.33
  
2.80-2.95
  
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
  
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
  
Cleavage
Not Available
  
Distinct on [001]
  
Mohs Hardness
5.5-6
  
6-6.5
  
Chemical Composition
Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Ca2Al2Si3O12(OH)
  
Luster
Vitreous
  
Vitreous
  
Pleochroism
Not Available
  
AbsentWalter Schumann
  
Dispersion
Not Available
  
None
  
Transparency
Gemmological Tables (2004)
  
Translucent
  
Refractive Index
1.483-1.487
  
1.611-1.673
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Not Available
  
Orthorhombic
  
Birefringence
Not Available
  
0.021-0.033
  
Clarity
Transparent
  
TranslucentHerve Nicolas Lazzarelli
  
Physical
  
  
Neurological
Not Available
  
Not Available
  
Cardiovascular
Not Available
  
Not Available
  
Respiratory
Not Available
  
Not Available
  
Reproductive
Not Available
  
Not Available
  
Digestive
Not Available
  
Not Available
  
Psychology
Not Available
  
Not Available
  
Healing
Not Available
  
Not Available
  
Qualities Associated
Not Available
  
Not Available
  
Hackmanite Vs Prehnite Fracture
Fracture is an important parameter when you compare Hackmanite and Prehnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Hackmanite Vs Prehnite fracture. Whenever a gemstone chip breaks, it leaves a characteristic line along its breakage. Such lines are known as fracture and are used to identify the gemstones in their initial stages of production when they are in the form of rough minerals. Fracture is usually described with the terms “fibrous” and “splintery” to denote a fracture that usually leaves elongated and sharp edges. Fracture observed in Hackmanite is Gemstones (2009), Gemstones (2009), UnevenArthur Thomas and UnevenArthur Thomas. Prehnite fracture is Brittle, Gemstones of the world (2001) More from other references, Metallic, Uneven, UnevenWalter Schumann, White and Yellow.
Hackmanite Vs Prehnite Luster
A primary knowledge about Hackmanite vs Prehnite luster is useful in apparent identifications of these gemstones. Luster is the measure of light that gets reflected when incident on a finished cut gemstone. There are two major types of lusters: Silky and Adamantine. Since luster varies between two crystals of even the same gemstone, luster is limited to basic identification criteria. Hackmanite exhibits Vitreous luster. Prehnite, on other hand, exhibits Vitreous luster.