Proustite Vs Astrophyllite
Origin
Southern and central Africa
Canada, Russia
Color
Black, Reddish, gray
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
Streak
Black, Red
Brown, White, Brown, White
For which Rashi?
Not Available
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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
Brittle
Not Available
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
5.51-5.64
3.2-3.4
Fracture
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Brittle, Metallic
Cleavage
Distinct on {10 1 1}
Perfect on [001] imperfect on [100]
Chemical Composition
Ag 3AsS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Luster
Adamantine
Greasy, Pearly
Pleochroism
Moderate; cochineal-red to blood-red
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Dispersion
Not Available
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Transparency
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references
Translucent
Refractive Index
2.792-3.087
1.678-1.758
Optic Character
Not Available
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Crystal System
Trigonal
Triclinic
Birefringence
0.295-0.296
0.050
Clarity
OpaqueUlrich Henn and Claudio C. Milisenda
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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Proustite Vs Astrophyllite Fracture
Fracture is an important parameter when you compare Proustite and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Proustite 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. Fracture observed in Proustite is Brittle, ConchoidalArthur Thomas, Gemstones (2009), Uneven and Uneven. Astrophyllite fracture is Brittle, Metallic and Uneven.
Proustite Vs Astrophyllite Luster
A primary knowledge about Proustite 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. Proustite exhibits Adamantine luster. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.