Origin
USA
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Color
Green, Colorless, Greenish, White
Blue, Violet, Greenish, Brown, Colorless, Colorless, Blue, Violet, Yellow, gray
Streak
Greenish, White
White
For which Rashi?
Not Available
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Planet
Not Available
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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
Not Available
Brittle
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.1-3.2
2.57-2.66
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Subconchoidal, Conchoidal, Brittle
Cleavage
Vitreous, pearly on cleavage
Fair on {100}, poor on {001} and {010}
Chemical Composition
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg2Al4Si5O18
Luster
Vitreous, Pearly
Greasy, Vitreous
Pleochroism
NilArthur Thomas
X = pale yellow
Dispersion
Not Available
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Transparency
Gemmological Tables (2004) More from other references
Not Available
Refractive Index
1.653-1.693
Not Available
Optic Character
Not Available
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Crystal System
monoclinic
Orthorhombic
Birefringence
0.038-0.044
Not Available
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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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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Ludlamite Vs Cordierite Fracture
Fracture is an important parameter when you compare Ludlamite and Cordierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Ludlamite Vs Cordierite 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 Ludlamite is UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas and Gemstones (2009). Cordierite fracture is Subconchoidal, Conchoidal and Brittle.
Ludlamite Vs Cordierite Luster
A primary knowledge about Ludlamite vs Cordierite 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. Ludlamite exhibits Vitreous and Pearly luster. Cordierite, on other hand, exhibits Greasy and Vitreous luster.
