Grandidierite Vs Uvite
Origin
Madagascar
Sri Lanka
Color
Green
Red, Brown, Black
For which Rashi?
Not Available
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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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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.85-3.00
2.97-3.14
Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
Uneven, Conchoidal, Brittle
Cleavage
Perfect
{1011} Indistinct
Mohs Hardness
7.5
Not Available
Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Ca(Mg 3)MgAl 5(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
visible
Pale yellow colorlessAnthony et al
Transparency
Gemmological Tables (2004) More from other references
Transparent
Refractive Index
1.578-1.639
1.614-1.666
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Not Available
Birefringence
0.037-0.039
0.014-0.032
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 Uvite Fracture
Fracture is an important parameter when you compare Grandidierite and Uvite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grandidierite Vs Uvite 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. Uvite fracture is Uneven, Conchoidal and Brittle.
Grandidierite Vs Uvite Luster
A primary knowledge about Grandidierite vs Uvite 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. Uvite, on other hand, exhibits Vitreous luster.
