Astrophyllite Vs Corundum
Origin
Canada, Russia
Southern and central Africa
Color
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
Violet, Blue, Red, Yellow, Brown, gray
Streak
Brown, White, Brown, White
White, None
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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insoluble
Durability
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Specific Gravity
3.2-3.4
3.90-4.05
Fracture
Uneven, Brittle, Metallic
Uneven, Uneven, Gems, Difficult, Fibrous
Cleavage
Perfect on [001] imperfect on [100]
None – parting in 3 directions
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Al 2O 3Arthur Thomas , Gemstones (2009)
Luster
Greasy, Pearly
Adamantine, Vitreous
Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
None
Transparency
Translucent
Transparent, Translucent
Refractive Index
1.678-1.758
1.758-1.780
Optic Character
Not Available
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Crystal System
Triclinic
Trigonal
Birefringence
0.050
0.007-0.010
Clarity
Translucent
Gemmological Tables (2004) More from other references
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 Corundum Fracture
Fracture is an important parameter when you compare Astrophyllite and Corundum Physical Properties. It is necessary to understand the significance of these properties, before you compare Astrophyllite Vs Corundum 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. Corundum fracture is Difficult, Fibrous, Gems, Uneven and Uneven.
Astrophyllite Vs Corundum Luster
A primary knowledge about Astrophyllite vs Corundum 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. Corundum, on other hand, exhibits Adamantine and Vitreous luster.