Origin
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
  
Southern and central Africa, violet, blue, violet, blue
  
Color
Colorless, gray, Yellow, White
  
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
  
Streak
Colorless
  
White
  
For which Rashi?
Not Available
  
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
  
Planet
Not Available
  
Saturn
  
Element of Planets
Not Available
  
Water
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Not Available
  
Receptive
  
Deities
Not Available
  
Isis
  
Not to wear with
Not Available
  
Not Available
  
Powers
Not Available
  
Healing
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Brittle
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.40
  
3.26-3.41
  
Fracture
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
  
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
  
Cleavage
Perfect on {001}, poor on {201} with 38.5° angle between the two
  
Distinct on {100}, poor on {110}; parting on {001}
  
Mohs Hardness
6-6.5
  
7-8.5
  
Chemical Composition
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
AlAl6O3BSi3O18
  
Luster
Vitreous, Pearly
  
Vitreous
  
Pleochroism
AbsentWalter Schumann
  
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
  
Dispersion
None
  
Transparency
Gemmological Tables (2004) More from other references
  
Translucent, Translucent to opaque
  
Refractive Index
1.502-1.523
  
1.669-1.723
  
Optic Character
Not Available
  
Not Available
  
Crystal System
monoclinic
  
Orthorhombic
  
Birefringence
0.012-0.016
  
0.011-0.037
  
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
  
Translucent
  
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
  
Petalite Vs Dumortierite Fracture
Fracture is an important parameter when you compare Petalite and Dumortierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Petalite Vs Dumortierite 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 Petalite is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references and Subconchoidal. Dumortierite fracture is ConchoidalWalter Schumann, Fibrous and Gemstones of the world (2001) More from other references.
Petalite Vs Dumortierite Luster
A primary knowledge about Petalite vs Dumortierite 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. Petalite exhibits Pearly and Vitreous luster. Dumortierite, on other hand, exhibits Vitreous luster.