Origin
Australia, Southern and central Africa, green, brown, Australia, France, green, brown, Australia, France
  
Afghanistan, Brazil, Madagascar, Mozambique, Southern and central Africa, Russia, Sri Lanka
  
Color
Green, Colorless, gray, Yellow, White
  
White, Colorless, Blue, Red, Green, Yellow, Violet
  
Streak
Colorless
  
Not Available
  
For which Rashi?
Libra
  
Not Available
  
Planet
Venus
  
Not Available
  
Element of Planets
Earth
  
Not Available
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Receptive
  
Not Available
  
Deities
Freya
  
Not Available
  
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
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.80-2.95
  
3.01-3.06
  
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Distinct on [001]
  
Not Available
  
Mohs Hardness
6-6.5
  
7-7.5
  
Chemical Composition
Ca2Al2Si3O12(OH)
  
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
  
Luster
Vitreous
  
Not Available
  
Pleochroism
AbsentWalter Schumann
  
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
  
Dispersion
None
  
Transparency
Translucent
  
Transparent, Translucent
  
Refractive Index
1.611-1.673
  
1.614-1.666
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Orthorhombic
  
Not Available
  
Birefringence
0.021-0.033
  
0.014-0.040
  
Clarity
TranslucentHerve Nicolas Lazzarelli
  
Transparent
  
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
  
Prehnite Vs Rubellite Fracture
Fracture is an important parameter when you compare Prehnite and Rubellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Prehnite Vs Rubellite 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 Prehnite is Brittle, Gemstones of the world (2001) More from other references, Metallic, Uneven, UnevenWalter Schumann, White and Yellow. Rubellite fracture is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Prehnite Vs Rubellite Luster
A primary knowledge about Prehnite vs Rubellite 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. Prehnite exhibits Vitreous luster.