Crocoite Vs Petalite
Origin
Australia, Southern and central Africa
Canada, USA, Brazil, Italy, Mozambique, Zimbabwe, Russia, Burma, Australia
Color
Red, Yellow, Red, orange
Colorless, gray, Yellow, White
Streak
yellowish orange
Colorless
For which Rashi?
Not Available
Not Available
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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Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
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Specific Gravity
5.90-6.10
2.40
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Cleavage
{110} Distinct, {001} Indistinct, {100} Indistinct
Perfect on {001}, poor on {201} with 38.5° angle between the two
Mohs Hardness
2.5-3
6-6.5
Chemical Composition
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Adamantine
Vitreous, Pearly
Pleochroism
Distinctly trichroic
AbsentWalter Schumann
Transparency
Transparent
Gemmological Tables (2004) More from other references
Refractive Index
2.31-2.66
1.502-1.523
Optic Character
Not Available
Not Available
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
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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Crocoite Vs Petalite Fracture
Fracture is an important parameter when you compare Crocoite and Petalite Physical Properties. It is necessary to understand the significance of these properties, before you compare Crocoite 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 Crocoite is (e.g. graphite)., ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009). Petalite fracture is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references and Subconchoidal.
Crocoite Vs Petalite Luster
A primary knowledge about Crocoite 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. Crocoite exhibits Adamantine luster. Petalite, on other hand, exhibits Pearly and Vitreous luster.