Blue John Vs Purpurite
Origin
Not Available
Southern and central Africa
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Violet, Brownish, Black, pink, Red, Reddish
For which Rashi?
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Planet
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Element of Planets
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Finger
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Ring Metal
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Energy
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Deities
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Not to wear with
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Powers
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Planetary
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Talisman
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Tenacity
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Solubility
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Durability
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Specific Gravity
3.00-3.25
3.2-3.4
Fracture
Not Available
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
Not Available
[100] [001] perfect
Mohs Hardness
Not Available
4-4.5
Chemical Composition
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Luster
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Pleochroism
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StrongArthur Thomas
Dispersion
Not Available
Not Available
Transparency
Transparent
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
Refractive Index
1.432-1.436
1.85-1.92
Optic Character
Not Available
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Crystal System
Not Available
Orthorhombic
Birefringence
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0.070
Clarity
Transparent
TranslucentWalter Schumann
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
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Blue John Vs Purpurite Fracture
Fracture is an important parameter when you compare Blue John and Purpurite Physical Properties. It is necessary to understand the significance of these properties, before you compare Blue John Vs Purpurite 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. Purpurite fracture is Brittle, Gemstones (2009), Uneven and UnevenArthur Thomas.
Blue John Vs Purpurite Luster
A primary knowledge about Blue John vs Purpurite 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.