Sugilite Vs Gahnite
Origin
Canada, Southern and central Africa, Italy, Australia, India
  
Australia
  
Color
Violet, Brownish, Yellow, Reddish, Pale pink
  
Blue, Green, Greenish, Black
  
Streak
White
  
Grey, gray
  
For which Rashi?
Virgo
  
Not Available
  
Planet
Mercury, Jupiter
  
Not Available
  
Element of Planets
Water
  
Not Available
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Receptive
  
Not Available
  
Deities
The All
  
Not Available
  
Not to wear with
Not Available
  
Not Available
  
Powers
Not Available
  
Not Available
  
Birthstone
  
  
Planetary
All
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.69-2.79
  
4.00-4.62
  
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Conchoidal, Uneven
  
Cleavage
Poor on {0001}
  
Indistinct parting on [111]
  
Mohs Hardness
5.5-6.5
  
7.5-8
  
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Luster
Vitreous
  
Vitreous
  
Pleochroism
Weak
  
Not Available
  
Dispersion
Not Available
  
Not Available
  
Transparency
Translucent
  
Gemmological Tables (2004) More from other references
  
Refractive Index
1.607-1.612
  
1.790-1.818
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Hexagonal
  
cubic
  
Birefringence
0.003
  
Not Available
  
Clarity
Translucent
  
TransparentUlrich Henn and Claudio C. Milisenda
  
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
  
Sugilite Vs Gahnite Fracture
Fracture is an important parameter when you compare Sugilite and Gahnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sugilite Vs Gahnite 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 Sugilite is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009). Gahnite fracture is Conchoidal and Uneven.
Sugilite Vs Gahnite Luster
A primary knowledge about Sugilite vs Gahnite 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. Sugilite exhibits Vitreous luster. Gahnite, on other hand, exhibits Vitreous luster.