Origin
USA, Mexico
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
Color
Green, Brown, Greenish, Brown, Green, Green, Black
Colorless, gray, Yellow, White
Streak
Greenish, gray, Greenish, gray
Colorless
For which Rashi?
Not Available
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Planet
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Element of Planets
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Finger
Not Available
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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
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Brittle
Solubility
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insoluble
Durability
Not Available
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Specific Gravity
3.19-3.56
2.40
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Cleavage
{110} Perfect, {010} Indistinct
Perfect on {001}, poor on {201} with 38.5° angle between the two
Mohs Hardness
5.5-6
6-6.5
Chemical Composition
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Resinous
Vitreous, Pearly
Pleochroism
Pale green
AbsentWalter Schumann
Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.671-1.774
1.502-1.523
Optic Character
Not Available
Not Available
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c
monoclinic
Birefringence
Not Available
0.012-0.016
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
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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Augite Vs Petalite Fracture
Fracture is an important parameter when you compare Augite and Petalite Physical Properties. It is necessary to understand the significance of these properties, before you compare Augite Vs Petalite 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 Augite is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Uneven and Uneven. Petalite fracture is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references and Subconchoidal.
Augite Vs Petalite Luster
A primary knowledge about Augite vs Petalite 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. Augite exhibits Resinous and Vitreous luster. Petalite, on other hand, exhibits Pearly and Vitreous luster.