Grandidierite Vs Apophyllite
Origin
Madagascar
India, Canada, Brazil
Color
Green
Colorless, Reddish, White, pink, Green, Yellow, Violet, White, pink, Green, Yellow, Violet, White, Colorless, Blue, Green, Brown, Yellow, pink, Violet, White, pink, Green, Yellow, Violet
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
2.85-3.00
2.30-2.50
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Uneven, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect
Perfect on (001)
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Luster
Vitreous, Pearly
Vitreous, Pearly
Pleochroism
visible
Dichroic (colorless)
Dispersion
Not Available
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Transparency
Gemmological Tables (2004) More from other references
Transparent, Translucent
Refractive Index
1.578-1.639
1.530-1.543
Optic Character
Not Available
Uniaxial/-
Crystal System
Orthorhombic
tetragonal
Birefringence
0.037-0.039
0.000-0.003
Clarity
Gemmological Tables (2004) More from other references
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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Grandidierite Vs Apophyllite Fracture
Fracture is an important parameter when you compare Grandidierite and Apophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grandidierite Vs Apophyllite 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. Apophyllite fracture is Gemstones (2009), Uneven and UnevenArthur Thomas.
Grandidierite Vs Apophyllite Luster
A primary knowledge about Grandidierite vs Apophyllite 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. Apophyllite, on other hand, exhibits Pearly and Vitreous luster.