Cavansite Vs Dravite
Origin
India
Southern and central Africa
Color
Blue, Greenish, Greenish, Blue
White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White
Streak
Blue, White
Colorless
For which Rashi?
Not Available
Not Available
Planet
Not Available
Not Available
Element of Planets
Not Available
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Finger
Not Available
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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
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Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.25-2.33
3.03-3.18
Fracture
Brittle, Metallic, Brittle, Metallic
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Good on {010}
{???} Indistinct
Chemical Composition
Ca(VO)Si4O10•4(H2O)
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Visible: X=Z= colorless Y= blue
Very strong: pale yellow colorless
Transparency
Not Available
Transparent
Refractive Index
1.542
1.614-1.666
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.009
0.014-0.032
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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Cavansite Vs Dravite Fracture
Fracture is an important parameter when you compare Cavansite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Cavansite Vs Dravite 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 Cavansite is Brittle, Brittle, Metallic and Metallic. Dravite fracture is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Irregular, Uneven and Uneven.
Cavansite Vs Dravite Luster
A primary knowledge about Cavansite vs Dravite 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. Cavansite exhibits Pearly and Vitreous luster. Dravite, on other hand, exhibits Vitreous luster.