Dravite Vs Mexican fire opal
Origin
Southern and central Africa
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Color
White, Colorless, Blue, Red, Green, Yellow, Violet, Black, Green, Red, Blue, White
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
Colorless
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For which Rashi?
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Planet
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Element of Planets
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Finger
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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
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Solubility
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Durability
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Specific Gravity
3.03-3.18
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Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
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Cleavage
{???} Indistinct
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Mohs Hardness
7-7.5
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Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
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Luster
Vitreous
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Pleochroism
Very strong: pale yellow colorless
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Transparency
Transparent
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Refractive Index
1.614-1.666
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Optic Character
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Crystal System
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
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Birefringence
0.014-0.032
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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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Dravite Vs Mexican fire opal Fracture
Fracture is an important parameter when you compare Dravite and Mexican fire opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Dravite Vs Mexican fire opal 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 Dravite is Brittle, Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Irregular, Uneven and Uneven.
Dravite Vs Mexican fire opal Luster
A primary knowledge about Dravite vs Mexican fire opal 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. Dravite exhibits Vitreous luster.