Sillimanite Vs Dioptase
Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Dioptase from Altyn Tübe, Kazakhstan, the type locality
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Green, Blue, Green
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
Soluble
Durability
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Specific Gravity
3.20-3.26
3.25-3.35
Fracture
Splintery
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Cleavage
{010} perfect
Perfect in three directions
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Subadamantine, Silky
Vitreous
Pleochroism
Colourless to pale brown to yellow
Weak; dark emerald green
Transparency
Transparent, Translucent
TranslucentHerve Nicolas Lazzarelli
Refractive Index
1.653-1.685
1.644-1.720
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal
Birefringence
0.020-0.022
0.051-0.053
Clarity
Transparent
TranslucentHerve Nicolas Lazzarelli
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 Dioptase Fracture
Fracture is an important parameter when you compare Sillimanite and Dioptase Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Dioptase 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. Dioptase fracture is Brittle, Conchoidal, Conchoidal, ConchoidalWalter Schumann and Gemstones of the world (2001) More from other references.
Sillimanite Vs Dioptase Luster
A primary knowledge about Sillimanite vs Dioptase 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. Dioptase, on other hand, exhibits Vitreous luster.