Blue John Vs Astrophyllite
Origin
Not Available
Canada, Russia
Color
White, Colorless, Blue, Red, Green, Yellow, Violet
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
Streak
Not Available
Brown, White, Brown, White
For which Rashi?
Not Available
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Planet
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Element of Planets
Not Available
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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
Not Available
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Durability
Not Available
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Specific Gravity
3.00-3.25
3.2-3.4
Fracture
Not Available
Uneven, Brittle, Metallic
Cleavage
Not Available
Perfect on [001] imperfect on [100]
Mohs Hardness
Not Available
3
Chemical Composition
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Luster
Not Available
Greasy, Pearly
Pleochroism
Not Available
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Dispersion
Not Available
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Transparency
Transparent
Translucent
Refractive Index
1.432-1.436
1.678-1.758
Optic Character
Not Available
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Crystal System
Not Available
Triclinic
Birefringence
Not Available
0.050
Clarity
Transparent
Translucent
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 Astrophyllite Fracture
Fracture is an important parameter when you compare Blue John and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Blue John Vs Astrophyllite 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. Astrophyllite fracture is Brittle, Metallic and Uneven.
Blue John Vs Astrophyllite Luster
A primary knowledge about Blue John vs Astrophyllite 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. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.