Sillimanite Vs Crocoite
Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Australia, Southern and central Africa
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Red, Yellow, Red, orange
Streak
White
yellowish orange
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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Tenacity
Tough
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Solubility
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Durability
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Specific Gravity
3.20-3.26
5.90-6.10
Fracture
Splintery
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).
Cleavage
{010} perfect
{110} Distinct, {001} Indistinct, {100} Indistinct
Mohs Hardness
6-7.5
2.5-3
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
PbCrO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Subadamantine, Silky
Adamantine
Pleochroism
Colourless to pale brown to yellow
Distinctly trichroic
Dispersion
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Transparency
Transparent, Translucent
Transparent
Refractive Index
1.653-1.685
2.31-2.66
Optic Character
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Crystal System
Orthorhombic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/n
Birefringence
0.020-0.022
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Clarity
Transparent
Transparent
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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Sillimanite Vs Crocoite Fracture
Fracture is an important parameter when you compare Sillimanite and Crocoite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Crocoite 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 Sillimanite is Splintery. Crocoite fracture is (e.g. graphite)., ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Sillimanite Vs Crocoite Luster
A primary knowledge about Sillimanite vs Crocoite 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. Sillimanite exhibits Silky, Subadamantine and Vitreous luster. Crocoite, on other hand, exhibits Adamantine luster.