Astrophyllite Vs Cordierite Iolite
Origin
Canada, Russia
Canada, Madagascar, Southern and central Africa, Sri Lanka, USA
Color
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
Violet, Blue
Streak
Brown, White, Brown, White
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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
3.2-3.4
2.56-2.66
Fracture
Uneven, Brittle, Metallic
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Perfect on [001] imperfect on [100]
Not Available
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Mg 2Al 4Si 5O 18Ulrich Henn and Claudio C.
Luster
Greasy, Pearly
Vitreous
Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Strong trichroism: colorless to yellowish
Transparency
Translucent
Transparent
Refractive Index
1.678-1.758
1.542-1.578
Optic Character
Not Available
Biaxial/+
Crystal System
Triclinic
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Birefringence
0.050
0.008-0.012
Clarity
Translucent
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
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Astrophyllite Vs Cordierite Iolite Fracture
Fracture is an important parameter when you compare Astrophyllite and Cordierite Iolite Physical Properties. It is necessary to understand the significance of these properties, before you compare Astrophyllite Vs Cordierite Iolite 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. Cordierite Iolite fracture is ConchoidalWalter Schumann, Gemstones of the world (2001), Uneven and Uneven.
Astrophyllite Vs Cordierite Iolite Luster
A primary knowledge about Astrophyllite vs Cordierite Iolite 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. Cordierite Iolite, on other hand, exhibits Vitreous luster.