Origin
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
USA
Color
Colorless, gray, Yellow, White
Green, Colorless, Greenish, White
Streak
Colorless
Greenish, 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
Not Available
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Deities
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Not to wear with
Not Available
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Powers
Not Available
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Planetary
Not Available
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Talisman
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Tenacity
Brittle
Not Available
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.40
3.1-3.2
Fracture
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {001}, poor on {201} with 38.5° angle between the two
Vitreous, pearly on cleavage
Chemical Composition
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Pearly
Vitreous, Pearly
Pleochroism
AbsentWalter Schumann
NilArthur Thomas
Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
Refractive Index
1.502-1.523
1.653-1.693
Optic Character
Not Available
Not Available
Crystal System
monoclinic
monoclinic
Birefringence
0.012-0.016
0.038-0.044
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Not Available
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Cardiovascular
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Respiratory
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
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Petalite Vs Ludlamite Fracture
Fracture is an important parameter when you compare Petalite and Ludlamite Physical Properties. It is necessary to understand the significance of these properties, before you compare Petalite Vs Ludlamite 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 Petalite is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references and Subconchoidal. Ludlamite fracture is Gemstones (2009), Gemstones (2009), UnevenArthur Thomas and UnevenArthur Thomas.
Petalite Vs Ludlamite Luster
A primary knowledge about Petalite vs Ludlamite 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. Petalite exhibits Pearly and Vitreous luster. Ludlamite, on other hand, exhibits Pearly and Vitreous luster.