Londonite Vs Astrophyllite
Origin
Madagascar
Canada, Russia
Color
White, Colorless, Yellow
Brown, Yellow, Greenish, Brown, Yellow, Greenish, Brown, Brownish, Red, Yellow
Streak
White
Brown, White, Brown, White
For which Rashi?
Not Available
Not Available
Planet
Not Available
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Element of Planets
Not Available
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Finger
Not Available
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Ring Metal
Not Available
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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
3.34
3.2-3.4
Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Uneven, Brittle, Metallic
Cleavage
None
Perfect on [001] imperfect on [100]
Mohs Hardness
Not Available
3
Chemical Composition
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Greasy, Pearly
Pleochroism
Not Available
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Dispersion
Not Available
Not Available
Transparency
Transparent
Translucent
Refractive Index
Not Available
1.678-1.758
Optic Character
Not Available
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Crystal System
Not Available
Triclinic
Birefringence
Not Available
0.050
Clarity
Transparent
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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Londonite Vs Astrophyllite Fracture
Fracture is an important parameter when you compare Londonite and Astrophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Londonite 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 Londonite is Brittle, Conchoidal, ConchoidalAnthony et al, ConchoidalAnthony et al, Handbook of mineralogy (2001) and Handbook of mineralogy (2001). Astrophyllite fracture is Brittle, Metallic and Uneven.
Londonite Vs Astrophyllite Luster
A primary knowledge about Londonite 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. Londonite exhibits Vitreous luster. Astrophyllite, on other hand, exhibits Greasy and Pearly luster.