Black Opal Vs Villiaumite
Origin
Australia
Canada, Southern and central Africa
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Colorless, Red, orange, Brown, pink
Streak
Not Available
White
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
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
2.79
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Brittle, Metallic
Cleavage
Not Available
{100} Perfect, {010} Perfect, {001} Perfect
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
NaFUlrich Henn and Claudio C.
Luster
Not Available
Not Available
Pleochroism
AbsentWalter Schumann
Yellow to pink/deep carmineMichael OâDonoghue
Dispersion
None
Not Available
Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.370-1.470
1.328-1.332
Optic Character
Not Available
Not Available
Crystal System
Not Available
Not Available
Birefringence
Not Available
Not Available
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Not Available
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Cardiovascular
Not Available
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Respiratory
Not Available
Not Available
Reproductive
Not Available
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Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Black Opal Vs Villiaumite Fracture
Fracture is an important parameter when you compare Black Opal and Villiaumite Physical Properties. It is necessary to understand the significance of these properties, before you compare Black Opal Vs Villiaumite 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). Villiaumite fracture is Brittle and Metallic.
Black Opal Vs Villiaumite Luster
A primary knowledge about Black Opal vs Villiaumite 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.