Atacamite Vs Sillimanite
Origin
Not Available
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
Green, Green, Yellow, Black
Blue, Green, Brownish, Greenish, Colorless, 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
Not Available
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Durability
Not Available
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Specific Gravity
3.745-3.776
3.20-3.26
Fracture
Conchoidal, Conchoidal, Brittle
Splintery
Cleavage
Perfect on {010}, fair on {101}
{010} perfect
Mohs Hardness
3-3.5
6-7.5
Chemical Composition
Cu2Cl(OH)3
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Adamantine, Vitreous
Vitreous, Subadamantine, Silky
Pleochroism
X = pale green; Y = yellow-green; Z = grass-green
Colourless to pale brown to yellow
Dispersion
Not Available
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Transparency
Not Available
Transparent, Translucent
Refractive Index
1.831
1.653-1.685
Optic Character
Not Available
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Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.049
0.020-0.022
Clarity
Not Available
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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Atacamite Vs Sillimanite Fracture
Fracture is an important parameter when you compare Atacamite and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Atacamite Vs Sillimanite 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 Atacamite is Brittle, Conchoidal and Conchoidal. Sillimanite fracture is Splintery.
Atacamite Vs Sillimanite Luster
A primary knowledge about Atacamite vs Sillimanite 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. Atacamite exhibits Adamantine and Vitreous luster. Sillimanite, on other hand, exhibits Silky, Subadamantine and Vitreous luster.