Andradite Vs Dravite
Origin
Italy, Russia
Southern and central Africa
Color
Colorless, Green, Black, Brown, Red, Greenish, Yellow, gray
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
Brittle
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Solubility
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Durability
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Specific Gravity
3.70-4.10
3.03-3.18
Fracture
Conchoidal, Uneven
Uneven, Irregular, Conchoidal
Cleavage
none
{???} Indistinct
Mohs Hardness
6.5-7
7-7.5
Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Adamantine, Resinous
Vitreous
Pleochroism
Not Available
Very strong: pale yellow colorless
Transparency
Transparent
Transparent
Refractive Index
1.88-1.94
1.614-1.666
Optic Character
Not Available
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Crystal System
cubic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.057
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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Andradite Vs Dravite Fracture
Fracture is an important parameter when you compare Andradite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andradite 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 Andradite is Conchoidal and Uneven. Dravite fracture is Uneven, Irregular and Conchoidal.
Andradite Vs Dravite Luster
A primary knowledge about Andradite 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. Andradite exhibits Adamantine and Resinous luster. Dravite, on other hand, exhibits Vitreous luster.
