Origin
Ethiopia
  
India, Southern and central Africa, Madagascar
  
Color
Yellow, White, Red, Brown, Blue
  
Black, Brownish, Greenish
  
Streak
White
  
Brown
  
For which Rashi?
Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio
  
Not Available
  
Planet
Mercury
  
Not Available
  
Element of Planets
Earth, Air, Water
  
Not Available
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Projective, Receptive
  
Not Available
  
Deities
Cupid
  
Not Available
  
Not to wear with
Not Available
  
Not Available
  
Powers
Astral Projection, Psychicism
  
Not Available
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
BrittleWalter Schumann
  
Not Available
  
Solubility
hot salt water
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.98-2.25
  
3.18-3.22
  
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Cleavage
None
  
{1011} Indistinct
  
Mohs Hardness
5-6.5
  
Not Available
  
Chemical Composition
SiO2 · nH2O
  
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
  
Luster
Vitreous, Pearly
  
Vitreous
  
Pleochroism
None
  
Very strong: yellow-brown pale yellow
  
Dispersion
None
  
Not Available
  
Transparency
Transparent, Translucent, Transparent to translucent
  
Transparent, Translucent
  
Refractive Index
1.37-1.52
  
1.635-1.672
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Trigonal
  
Not Available
  
Birefringence
Not Available
  
0.025
  
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
  
Opal Vs Schorl Fracture
Fracture is an important parameter when you compare Opal and Schorl Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal Vs Schorl 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 Opal is Brittle, Conchoidal, Conchoidal and Gemstones of the world (2001) More from other references. Schorl fracture is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Uneven and Uneven.
Opal Vs Schorl Luster
A primary knowledge about Opal vs Schorl 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. Opal exhibits Pearly and Vitreous luster. Schorl, on other hand, exhibits Vitreous luster.