Astrophyllite Vs Demantoid
Origin
Canada, Russia
Italy
Color
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
Green
Streak
Brown, White, Brown, White
Not Available
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
Not Available
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Durability
Not Available
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Specific Gravity
3.2-3.4
3.77-3.95
Fracture
Uneven, Brittle, Metallic
Not Available
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)
Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.
Luster
Greasy, Pearly
Adamantine
Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
None
Dispersion
Not Available
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Transparency
Translucent
Gemmological Tables (2004)
Refractive Index
1.678-1.758
1.880-1.890
Optic Character
Not Available
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Crystal System
Triclinic
cubic
Birefringence
0.050
Not Available
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
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 Demantoid Fracture
Fracture is an important parameter when you compare Astrophyllite and Demantoid Physical Properties. It is necessary to understand the significance of these properties, before you compare Astrophyllite Vs Demantoid 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.
Astrophyllite Vs Demantoid Luster
A primary knowledge about Astrophyllite vs Demantoid 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. Demantoid, on other hand, exhibits Adamantine luster.