Schorl Vs Common Opal
Origin
India, Southern and central Africa, Madagascar
Southern and central Africa
Color
Black, Brownish, Greenish
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
Brown
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For which Rashi?
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Planet
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Element of Planets
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Finger
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Ring Metal
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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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Planetary
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Talisman
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Tenacity
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.18-3.22
1.98-2.50
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
{1011} Indistinct
Not Available
Mohs Hardness
Not Available
5.5-6.5
Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Luster
Vitreous
Not Available
Pleochroism
Very strong: yellow-brown pale yellow
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Transparent, Translucent
Translucent
Refractive Index
1.635-1.672
1.37-1.52
Optic Character
Not Available
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Crystal System
Not Available
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Birefringence
0.025
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Clarity
Transparent
Translucent
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 Common Opal Fracture
Fracture is an important parameter when you compare Schorl and Common Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Schorl Vs Common Opal 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. Common Opal fracture is Conchoidal, Conchoidal and Gemstones of the world (2001).
Schorl Vs Common Opal Luster
A primary knowledge about Schorl vs Common Opal 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.