Origin
Burma, Sri Lanka, India, Madagascar, Kenya, Tanzania, Thailand, Cambodia, China, Australia, USA
  
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
  
Color
Colorless, Yellow, Green, Violet, White, Colorless, Blue, Red, Green, Yellow, pink
  
Violet, Blue
  
Streak
Not Available
  
Not Available
  
For which Rashi?
Pisces, Taurus, Gemini, Libra, Pisces, Taurus, Gemini, Libra, Pisces, Taurus, Gemini, Libra
  
Not Available
  
Planet
Saturn
  
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
Apollo
  
Not Available
  
Not to wear with
Not Available
  
Not Available
  
Powers
Psychic Power, Prosperity
  
Not Available
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.03
  
2.56-2.66
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
None, but may exhibit parting
  
Not Available
  
Mohs Hardness
9
  
7-7.5
  
Chemical Composition
Al 2 O 3
  
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
  
Luster
Vitreous, Adamantine, Vitreous, Adamantine
  
Vitreous
  
Pleochroism
Strong
  
Strong trichroism: colorless to yellowish
  
Transparency
Transparent, Translucent, Transparent to opaque
  
Transparent
  
Refractive Index
1.762-1.788
  
1.542-1.578
  
Optic Character
Not Available
  
Biaxial/+
  
Crystal System
Trigonal
  
Not Available
  
Birefringence
0.008-0.009
  
0.008-0.012
  
Clarity
Transparent
  
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
  
Sapphire Vs Cordierite Iolite Fracture
Fracture is an important parameter when you compare Sapphire and Cordierite Iolite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sapphire Vs Cordierite Iolite 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 Sapphire is Gems, Sixth Edition (2006), Uneven and Uneven. Cordierite Iolite fracture is ConchoidalWalter Schumann, Gemstones of the world (2001), Uneven and Uneven.
Sapphire Vs Cordierite Iolite Luster
A primary knowledge about Sapphire vs Cordierite Iolite 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. Sapphire exhibits Adamantine, Adamantine, Vitreous and Vitreous luster. Cordierite Iolite, on other hand, exhibits Vitreous luster.