Nickeline Vs Grandidierite
Origin
Australia
Madagascar
Color
Red, White, gray, Black
Green
Streak
Brownish, Black
White
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
Brittle
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Solubility
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Durability
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Specific Gravity
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2.85-3.00
Fracture
Conchoidal, Uneven
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
{1010} Imperfect, {0001} Imperfect
Perfect
Chemical Composition
Not Available
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Luster
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Vitreous, Pearly
Pleochroism
Strong (reflected light)
visible
Dispersion
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Transparency
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Gemmological Tables (2004) More from other references
Refractive Index
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1.578-1.639
Optic Character
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Crystal System
Hexagonal
Orthorhombic
Birefringence
Not Available
0.037-0.039
Clarity
Not Available
Gemmological Tables (2004) More from other references
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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Nickeline Vs Grandidierite Fracture
Fracture is an important parameter when you compare Nickeline and Grandidierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Nickeline Vs Grandidierite 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 Nickeline is Conchoidal and Uneven. Grandidierite fracture is Brittle, Brittle, Gemstones (2009), Uneven and UnevenArthur Thomas.
Nickeline Vs Grandidierite Luster
A primary knowledge about Nickeline vs Grandidierite 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. Grandidierite, on other hand, exhibits Pearly and Vitreous luster.