Petalite Vs Lawsonite
Origin
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
Italy, China
Color
Colorless, gray, Yellow, White
Colorless, White, Blue, gray
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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Solubility
insoluble
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Durability
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Specific Gravity
2.40
3.09
Fracture
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
White, Yellow, Pale blue, Brittle, Uneven
Cleavage
Perfect on {001}, poor on {201} with 38.5° angle between the two
Perfect on {100} and {010}, imperfect on {101}
Chemical Composition
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Not Available
Luster
Vitreous, Pearly
Vitreous, Greasy
Pleochroism
AbsentWalter Schumann
Weak
Transparency
Gemmological Tables (2004) More from other references
Not Available
Refractive Index
1.502-1.523
1.672-1.676
Optic Character
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Crystal System
monoclinic
Orthorhombic
Birefringence
0.012-0.016
0.019-0.021
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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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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Petalite Vs Lawsonite Fracture
Fracture is an important parameter when you compare Petalite and Lawsonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Petalite Vs Lawsonite 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. Lawsonite fracture is Brittle, Pale blue, Uneven, White and Yellow.
Petalite Vs Lawsonite Luster
A primary knowledge about Petalite vs Lawsonite 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. Lawsonite, on other hand, exhibits Greasy and Vitreous luster.