Andradite Vs Polyhalite
Origin
Italy, Russia
Austria
Color
Colorless, Green, Black, Brown, Red, Greenish, Yellow, gray
Colorless, White, Red, gray, pink
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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Solubility
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Soluble
Durability
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Specific Gravity
3.70-4.10
2.78
Fracture
Conchoidal, Uneven, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle
Cleavage
none
Perfect on {10 1 }; parting on {010}
Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Not Available
Luster
Adamantine, Resinous
Vitreous, Resinous
Pleochroism
Not Available
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Transparency
Transparent
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Refractive Index
1.88-1.94
1.546-1.548
Optic Character
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Crystal System
cubic
Triclinic
Birefringence
0.057
0.021
Clarity
Transparent
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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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Andradite Vs Polyhalite Fracture
Fracture is an important parameter when you compare Andradite and Polyhalite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andradite Vs Polyhalite 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 Andradite is Conchoidal, Uneven, Brittle, ConchoidalArthur Thomas and Gemstones (2009). Polyhalite fracture is Conchoidal and Brittle.
Andradite Vs Polyhalite Luster
A primary knowledge about Andradite vs Polyhalite 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. Andradite exhibits Adamantine and Resinous luster. Polyhalite, on other hand, exhibits Vitreous and Resinous luster.