Schorl Vs Nuummite
Origin
India, Southern and central Africa, Madagascar
  
Not Available
  
Color
Black, Brownish, Greenish
  
Green
  
Streak
Brown
  
Not Available
  
For which Rashi?
Not Available
  
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Planet
Not Available
  
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Element of Planets
Not Available
  
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How to Wear?
  
  
Finger
Not Available
  
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Ring Metal
Not Available
  
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Energy
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Deities
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Not to wear with
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Powers
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Birthstone
  
  
Planetary
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Talisman
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Tenacity
Not Available
  
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Solubility
Not Available
  
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Durability
Not Available
  
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Specific Gravity
3.18-3.22
  
3.18-3.37
  
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Conchoidal
  
Cleavage
{1011} Indistinct
  
Perfect on 210
  
Mohs Hardness
Not Available
  
5.5-6
  
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
  
Not Available
  
Luster
Vitreous
  
Not Available
  
Pleochroism
Very strong: yellow-brown pale yellow
  
Not Available
  
Dispersion
Not Available
  
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Transparency
Transparent, Translucent
  
Gemmological Tables (2004) More from other references
  
Refractive Index
1.635-1.672
  
1.635-1.663
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Not Available
  
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Birefringence
0.025
  
0.0170-0.230
  
Clarity
Transparent
  
Gemmological Tables (2004) More from other references
  
Physical
  
  
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Schorl Vs Nuummite Fracture
Fracture is an important parameter when you compare Schorl and Nuummite Physical Properties. It is necessary to understand the significance of these properties, before you compare Schorl Vs Nuummite 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 Schorl is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Uneven and Uneven. Nuummite fracture is Conchoidal.
Schorl Vs Nuummite Luster
A primary knowledge about Schorl vs Nuummite 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. Schorl exhibits Vitreous luster.