Opal Vs Corundum
Origin
Ethiopia
Southern and central Africa
Color
Yellow, White, Red, Brown, Blue
Violet, Blue, Red, Yellow, Brown, gray
For which Rashi?
Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio
Not Available
Planet
Mercury
Not Available
Element of Planets
Earth, Air, Water
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Finger
Not Available
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Ring Metal
Not Available
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Energy
Projective, Receptive
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Deities
Cupid
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Not to wear with
Not Available
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Powers
Astral Projection, Psychicism
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Planetary
Not Available
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Talisman
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Tenacity
BrittleWalter Schumann
Brittle
Solubility
hot salt water
insoluble
Durability
Not Available
Not Available
Specific Gravity
1.98-2.25
3.90-4.05
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Uneven, Uneven, Gems, Difficult, Fibrous
Cleavage
None
None – parting in 3 directions
Chemical Composition
SiO2 · nH2O
Al 2O 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous, Pearly
Adamantine, Vitreous
Transparency
Transparent, Translucent, Transparent to translucent
Transparent, Translucent
Refractive Index
1.37-1.52
1.758-1.780
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Trigonal
Birefringence
Not Available
0.007-0.010
Clarity
Transparent
Gemmological Tables (2004) More from other references
Neurological
Not Available
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Cardiovascular
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Respiratory
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
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Qualities Associated
Not Available
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Opal Vs Corundum Fracture
Fracture is an important parameter when you compare Opal and Corundum Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal Vs Corundum 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. Corundum fracture is Difficult, Fibrous, Gems, Uneven and Uneven.
Opal Vs Corundum Luster
A primary knowledge about Opal vs Corundum 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. Corundum, on other hand, exhibits Adamantine and Vitreous luster.