Grandidierite Vs Periclase
Origin
Madagascar
Austria, Spain, Russia, Canada, Australia
Color
Green
Colorless, Brownish, Yellow, Green, gray, 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
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Brittle
Solubility
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Durability
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Specific Gravity
2.85-3.00
3.7-3.9
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Conchoidal, Brittle
Cleavage
Perfect
{001} perfect; {111} imperfect, may exhibit parting on , {011}
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
MgOMichael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
visible
Not Available
Dispersion
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Transparency
Gemmological Tables (2004) More from other references
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Refractive Index
1.578-1.639
1.735-1.738
Optic Character
Not Available
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Crystal System
Orthorhombic
Isometric
Birefringence
0.037-0.039
Not Available
Clarity
Gemmological Tables (2004) More from other references
TransparentWalter Schumann
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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Grandidierite Vs Periclase Fracture
Fracture is an important parameter when you compare Grandidierite and Periclase Physical Properties. It is necessary to understand the significance of these properties, before you compare Grandidierite Vs Periclase 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 Grandidierite is Brittle, Brittle, Gemstones (2009), Uneven and UnevenArthur Thomas. Periclase fracture is Brittle and Conchoidal.
Grandidierite Vs Periclase Luster
A primary knowledge about Grandidierite vs Periclase 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 exhibits Pearly and Vitreous luster. Periclase, on other hand, exhibits Vitreous luster.