Grandidierite Vs Goethite
Origin
Madagascar
Australia
Color
Green
Brown, Brown, Reddish, Brownish, Yellow, Brown, Reddish, Brownish, Yellow
Streak
White
Brown, Brownish, Yellow
For which Rashi?
Not Available
Not Available
Planet
Not Available
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Element of Planets
Not Available
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Finger
Not Available
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Ring Metal
Not Available
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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
Not Available
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Solubility
Not Available
HCl soluble
Durability
Not Available
Not Available
Specific Gravity
2.85-3.00
4.27-4.29
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Uneven, torn surfaces, (e.g. fractured metals)., Uneven, Gemstones (2009), torn surfaces, (e.g. fractured metals).
Cleavage
Perfect
Perfect {010}
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
FeO(OH)Arthur Thomas , Gemstones (2009)
Luster
Vitreous, Pearly
Adamantine
Pleochroism
visible
VisibleArthur Thomas
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004) More from other references
Gemstones (2009)
Refractive Index
1.578-1.639
2.26-2.398
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.037-0.039
0.138
Clarity
Gemmological Tables (2004) More from other references
Gemstones (2009)
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 Goethite Fracture
Fracture is an important parameter when you compare Grandidierite and Goethite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grandidierite Vs Goethite 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. Goethite fracture is (e.g. fractured metals)., (e.g. fractured metals)., Gemstones (2009), torn surfaces, torn surfaces, Uneven and Uneven.
Grandidierite Vs Goethite Luster
A primary knowledge about Grandidierite vs Goethite 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. Goethite, on other hand, exhibits Adamantine luster.