Poldervaartite Vs Dravite
Origin
Southern and central Africa
Southern and central Africa
Color
Colorless, White
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
For which Rashi?
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Planet
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Element of Planets
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Energy
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Finger
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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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Solubility
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Durability
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Specific Gravity
2.91
3.03-3.18
Fracture
Handbook of mineralogy (2001)
Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
None
{???} Indistinct
Mohs Hardness
Not Available
7-7.5
Chemical Composition
(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Pleochroism
Weak: colorless light gray bluish grayAnthony et al
Very strong: pale yellow colorless
Transparency
Transparent
Transparent
Refractive Index
1.634-1.656
1.614-1.666
Optic Character
Not Available
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Crystal System
Not Available
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
Not Available
0.014-0.032
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
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Healing
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Qualities Associated
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Poldervaartite Vs Dravite Fracture
Fracture is an important parameter when you compare Poldervaartite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Poldervaartite 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 Poldervaartite is Handbook of mineralogy (2001). Dravite fracture is Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal and Brittle.
Poldervaartite Vs Dravite Luster
A primary knowledge about Poldervaartite 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. Poldervaartite exhibits Vitreous luster. Dravite, on other hand, exhibits Vitreous luster.