Origin
Southern and central Africa
Austria, Brazil, Canada, India, Madagascar, Russia, Sri Lanka, USA
Color
Colorless, Colorless, gray, White, White
Red, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black, Brown, Brownish, Red, Red, Black
For which Rashi?
Not Available
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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
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Durability
Not Available
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Specific Gravity
2.40-2.42
3.95-4.30
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
{010} Perfect, {001} Distinct
none
Chemical Composition
Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous
Greasy, Vitreous
Pleochroism
NilArthur Thomas
None
Transparency
Transparent
Gemmological Tables (2004) More from other references
Refractive Index
1.584-1.615
1.770-1.820
Optic Character
Not Available
Not Available
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
cubic
Birefringence
0.028-0.030
Not Available
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
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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Colemanite Vs Almandine Fracture
Fracture is an important parameter when you compare Colemanite and Almandine Physical Properties. It is necessary to understand the significance of these properties, before you compare Colemanite Vs Almandine 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 Colemanite is Brittle, Gemstones (2009), Gemstones (2009), Metallic and UnevenArthur Thomas. Almandine fracture is Brittle, Brittle, Brittle, Conchoidal, Conchoidal, Conchoidal, Conchoidal, ConchoidalArthur Thomas and Gemstones (2009).
Colemanite Vs Almandine Luster
A primary knowledge about Colemanite vs Almandine 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. Colemanite exhibits Vitreous luster. Almandine, on other hand, exhibits Greasy and Vitreous luster.