Origin
Canada, Russia
Austria, Spain, Russia, Canada, Australia
Color
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
Colorless, Brownish, Yellow, Green, gray, White
Streak
Brown, White, Brown, White
White
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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Brittle
Solubility
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Durability
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Specific Gravity
3.2-3.4
3.7-3.9
Fracture
Uneven, Brittle, Metallic
Conchoidal, Brittle
Cleavage
Perfect on [001] imperfect on [100]
{001} perfect; {111} imperfect, may exhibit parting on , {011}
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Greasy, Pearly
Vitreous
Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
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Dispersion
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Transparency
Translucent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Refractive Index
1.678-1.758
1.735-1.738
Optic Character
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Crystal System
Triclinic
Isometric
Birefringence
0.050
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Clarity
Translucent
TransparentWalter 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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Astrophyllite Vs Periclase Fracture
Fracture is an important parameter when you compare Astrophyllite and Periclase Physical Properties. It is necessary to understand the significance of these properties, before you compare Astrophyllite Vs Periclase 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 Astrophyllite is Brittle, Metallic and Uneven. Periclase fracture is Brittle and Conchoidal.
Astrophyllite Vs Periclase Luster
A primary knowledge about Astrophyllite vs Periclase 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 exhibits Greasy and Pearly luster. Periclase, on other hand, exhibits Vitreous luster.