Boulder Opal Vs Holmquistite
Origin
Australia
Southern and central Africa
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Black, Blue, Violet
Streak
Not Available
White
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
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Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Not Available
Deities
Not Available
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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
1.98-2.25
2.95-3.13
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Not Available
Cleavage
Not Available
{210} Perfect
Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Not Available
Vitreous
Pleochroism
AbsentWalter Schumann
Strong in shades of violet when dark-colored.Anthony et al
Dispersion
None
Not Available
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.370-1.470
1.622-1.666
Optic Character
Not Available
Not Available
Crystal System
Not Available
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
Not Available
Not Available
Clarity
Transparent
Transparent
Neurological
Not Available
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Cardiovascular
Not Available
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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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Boulder Opal Vs Holmquistite Fracture
Fracture is an important parameter when you compare Boulder Opal and Holmquistite Physical Properties. It is necessary to understand the significance of these properties, before you compare Boulder Opal Vs Holmquistite 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 Boulder Opal is ConchoidalArthur Thomas, ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009), Gemstones (2009) and Gemstones (2009).
Boulder Opal Vs Holmquistite Luster
A primary knowledge about Boulder Opal vs Holmquistite 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. Holmquistite, on other hand, exhibits Vitreous luster.