Sillimanite Vs Ulexite
Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
USA
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Colorless, White
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
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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
Not Available
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Tenacity
Tough
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.20-3.26
1.65-1.99
Fracture
Splintery
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
Cleavage
{010} perfect
{010} Perfect, {110} Perfect
Mohs Hardness
6-7.5
2-2.5
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Subadamantine, Silky
Not Available
Pleochroism
Colourless to pale brown to yellow
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Transparent, Translucent
Transparent
Refractive Index
1.653-1.685
1.491-1.520
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Not Available
Birefringence
0.020-0.022
0.029
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
Not Available
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Healing
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Qualities Associated
Not Available
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Sillimanite Vs Ulexite Fracture
Fracture is an important parameter when you compare Sillimanite and Ulexite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Ulexite 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. Ulexite fracture is Brittle, Metallic, Uneven, Uneven, UnevenAnthony et al and UnevenAnthony et al.
Sillimanite Vs Ulexite Luster
A primary knowledge about Sillimanite vs Ulexite 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.