Grandidierite Vs Erythrite
Origin
Madagascar
Czech, Mexico, Australia
Color
Green
Red, Colorless, Violet, Red, pink
For which Rashi?
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Planet
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Element of Planets
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Energy
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Finger
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Ring Metal
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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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Sectile
Solubility
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Durability
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Specific Gravity
2.85-3.00
3.06
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Cleavage
Perfect
Perfect on {010}; poor on {100} and { 1 02}.
Mohs Hardness
7.5
Not Available
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Co3(AsO4)2•8(H2O)
Luster
Vitreous, Pearly
Subadamantine, Pearly
Pleochroism
visible
Visible: X = pale pinkish to pale rose; Y = pale violet to pale violet-rose; Z = deep red
Dispersion
Not Available
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Transparency
Gemmological Tables (2004) More from other references
Not Available
Refractive Index
1.578-1.639
1.626-1.629
Optic Character
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Crystal System
Orthorhombic
monoclinic
Birefringence
0.037-0.039
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Clarity
Gemmological Tables (2004) More from other references
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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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Grandidierite Vs Erythrite Fracture
Fracture is an important parameter when you compare Grandidierite and Erythrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grandidierite Vs Erythrite 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, UnevenArthur Thomas, Gemstones (2009), Brittle and Uneven. Erythrite fracture is Sectile Curved shavings or scrapings produced by a knife blade and (e.g. graphite)..
Grandidierite Vs Erythrite Luster
A primary knowledge about Grandidierite vs Erythrite 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 Vitreous and Pearly luster. Erythrite, on other hand, exhibits Subadamantine and Pearly luster.
