Black Opal Vs Obsidian
Origin
Australia
Australia, Canada, Guatemala, Italy, Kenya, Mexico, Turkey, Mexico, Guatemala, Mexico, Guatemala
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Brown, Green
Streak
Not Available
Not Available
For which Rashi?
Not Available
Sagittarius
Planet
Not Available
Not Available
Element of Planets
Not Available
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Finger
Not Available
Not Available
Ring Metal
Not Available
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Energy
Not Available
Projective
Deities
Not Available
Itzpapalotl
Not to wear with
Not Available
Not Available
Powers
Not Available
Protection
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.97-2.22
2.35-2.60
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, ConchoidalWalter Schumann, Conchoidal
Cleavage
Not Available
Not Available
Mohs Hardness
6-6.5
5-5.5
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
Not Available
Luster
Not Available
Vitreous
Pleochroism
AbsentWalter Schumann
AbsentWalter Schumann
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.370-1.470
1.450-1.550
Optic Character
Not Available
Not Available
Crystal System
Not Available
Amorphous
Birefringence
Not Available
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Clarity
Transparent
Transparent
Neurological
Not Available
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Cardiovascular
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Respiratory
Not Available
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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
Not Available
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Qualities Associated
Not Available
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Black Opal Vs Obsidian Fracture
Fracture is an important parameter when you compare Black Opal and Obsidian Physical Properties. It is necessary to understand the significance of these properties, before you compare Black Opal Vs Obsidian 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 Black Opal is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009). Obsidian fracture is Conchoidal, Conchoidal and ConchoidalWalter Schumann.
Black Opal Vs Obsidian Luster
A primary knowledge about Black Opal vs Obsidian 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. Obsidian, on other hand, exhibits Vitreous luster.