Petalite Vs Prehnite
Origin
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
Australia, Southern and central Africa, France
Color
Colorless, gray, Yellow, White
Green, Colorless, gray, Yellow, White
Streak
Colorless
Colorless
For which Rashi?
Not Available
Libra
Planet
Not Available
Venus
Element of Planets
Not Available
Earth
Energy
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Not Available
Freya
Not to wear with
Not Available
Not Available
Powers
Not Available
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.40
2.80-2.95
Fracture
Subconchoidal, ConchoidalWalter Schumann, Conchoidal
Uneven
Cleavage
Perfect on {001}, poor on {201} with 38.5° angle between the two
Distinct on [001]
Mohs Hardness
6-6.5
6-6.5
Chemical Composition
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ca2Al2Si3O12(OH)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Not Available
Not Available
Transparency
Not Available
Translucent
Refractive Index
1.502-1.523
1.611-1.673
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Orthorhombic
Birefringence
0.012-0.016
0.021-0.033
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TranslucentHerve Nicolas Lazzarelli
Neurological
Not Available
Not Available
Cardiovascular
Not Available
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Respiratory
Not Available
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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
Not Available
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Petalite Vs Prehnite Fracture
Fracture is an important parameter when you compare Petalite and Prehnite Physical Properties. It is necessary to understand the significance of these properties, before you compare Petalite Vs Prehnite 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 Subconchoidal, ConchoidalWalter Schumann and Conchoidal. Prehnite fracture is Uneven.
Petalite Vs Prehnite Luster
A primary knowledge about Petalite vs Prehnite 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 Vitreous and Pearly luster. Prehnite, on other hand, exhibits Vitreous luster.
