Povondraite Vs Achroite
Origin
Not Available
Afghanistan, Sri Lanka
Color
Brownish, Black
Colorless, Blue
Streak
Brown
Not Available
For which Rashi?
Not Available
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Planet
Not Available
Not Available
Element of Planets
Not Available
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Energy
Not Available
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Finger
Not Available
Not Available
Ring Metal
Not Available
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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
3.26
2.90-3.40
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
None
Not Available
Mohs Hardness
Not Available
7-7.5
Chemical Composition
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Luster
Resinous
Not Available
Pleochroism
Strong: yellow-brown
Not Available
Transparency
Translucent
Transparent, Translucent
Refractive Index
Not Available
1.614-1.666
Optic Character
Not Available
Not Available
Crystal System
Not Available
Not Available
Birefringence
Not Available
0.014-0.040
Clarity
Translucent
Transparent
Neurological
Not Available
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Cardiovascular
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Respiratory
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
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Qualities Associated
Not Available
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Povondraite Vs Achroite Fracture
Fracture is an important parameter when you compare Povondraite and Achroite Physical Properties. It is necessary to understand the significance of these properties, before you compare Povondraite Vs Achroite 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 Povondraite is Uneven, Uneven, ConchoidalAnthony et al and Handbook of mineralogy (2001). Achroite fracture is Uneven, Uneven, ConchoidalWalter Schumann and Gemstones of the world (2001).
Povondraite Vs Achroite Luster
A primary knowledge about Povondraite vs Achroite 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. Povondraite exhibits Resinous luster.
