Leucite Vs Blue John
Origin
Southern and central Africa
Not Available
Color
White, Colorless, gray, Yellow
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
White
Not Available
For which Rashi?
Not Available
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Planet
Not Available
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Element of Planets
Not Available
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Finger
Not Available
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Ring Metal
Not Available
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Energy
Not Available
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Deities
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Not to wear with
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Powers
Not Available
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Planetary
Not Available
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Talisman
Not Available
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Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
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Specific Gravity
2.45-2.50
3.00-3.25
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Not Available
Cleavage
Poor on {110}
Not Available
Mohs Hardness
5.5-6
Not Available
Chemical Composition
KAlSi 2O 6Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
Not Available
Pleochroism
Not Available
Not Available
Transparency
Gemmological Tables (2004) More from other references
Transparent
Refractive Index
1.504-1.510
1.432-1.436
Optic Character
Not Available
Not Available
Crystal System
tetragonal
Not Available
Birefringence
0.001
Not Available
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
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
Not Available
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Leucite Vs Blue John Fracture
Fracture is an important parameter when you compare Leucite and Blue John Physical Properties. It is necessary to understand the significance of these properties, before you compare Leucite Vs Blue John 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 Leucite is Brittle, Conchoidal, ConchoidalArthur Thomas and Gemstones (2009).
Leucite Vs Blue John Luster
A primary knowledge about Leucite vs Blue John 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. Leucite exhibits Vitreous luster.