Origin
Southern and central Africa
Switzerland, Australia, Brazil
Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White
Yellow, Colorless, White, Brownish, Reddish
For which Rashi?
Not Available
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Planet
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Element of Planets
Not Available
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Energy
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Finger
Not Available
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Ring Metal
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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
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Brittle
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.03-3.18
5.9-6.3
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Uneven
Cleavage
{???} Indistinct
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Mohs Hardness
7-7.5
4.5-5
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Adamantine
Pleochroism
Very strong: pale yellow colorless
Definite dichoric in yellow (yellow to orange-brown)
Transparency
Transparent
Translucent, Transparent
Refractive Index
1.614-1.666
1.918-1.936
Optic Character
Not Available
Not Available
Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
tetragonal
Birefringence
0.014-0.032
0.016
Clarity
Transparent
Translucent
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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Dravite Vs Scheelite Fracture
Fracture is an important parameter when you compare Dravite and Scheelite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dravite Vs Scheelite 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 Dravite is Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal and Brittle. Scheelite fracture is Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references and Uneven.
Dravite Vs Scheelite Luster
A primary knowledge about Dravite vs Scheelite 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. Dravite exhibits Vitreous luster. Scheelite, on other hand, exhibits Vitreous and Adamantine luster.
