Thulite Vs Dravite
Origin
Australia
Southern and central Africa
Color
Red
White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White
Streak
White, Colorless
Colorless
For which Rashi?
Not Available
Not Available
Planet
Not Available
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Element of Planets
Not Available
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Finger
Not Available
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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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Tenacity
Not Available
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.1
3.03-3.18
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Perfect {010} imperfect {100}
{???} Indistinct
Chemical Composition
Ca2Al3(SiO4)3(OH)
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Pleochroism
Present
Very strong: pale yellow colorless
Transparency
Opaque, Translucent, Opaque . May be translucent in thin backlit sections.
Transparent
Refractive Index
1.695
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
0.006-0.018
0.014-0.032
Clarity
OpaqueHerve Nicolas Lazzarelli
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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Thulite Vs Dravite Fracture
Fracture is an important parameter when you compare Thulite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Thulite 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 Thulite is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven. Dravite fracture is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Irregular, Uneven and Uneven.
Thulite Vs Dravite Luster
A primary knowledge about Thulite 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. Thulite exhibits Vitreous luster. Dravite, on other hand, exhibits Vitreous luster.