Origin
Southern and central Africa, violet, blue, violet, blue
Australia, Brazil, Burma, Canada, India, Madagascar, Sri Lanka, Tanzania
Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Blue, Violet, Greenish, Brown, Colorless, Colorless, Blue, Violet, Yellow, gray
For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
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Planet
Saturn
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Element of Planets
Water
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Finger
Not Available
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Ring Metal
Not Available
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Energy
Receptive
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Deities
Isis
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Not to wear with
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Powers
Healing
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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
3.26-3.41
2.57-2.66
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Subconchoidal, Conchoidal, Brittle
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Fair on {100}, poor on {001} and {010}
Mohs Hardness
7-8.5
7-7.5
Chemical Composition
AlAl6O3BSi3O18
Mg2Al4Si5O18
Luster
Vitreous
Greasy, Vitreous
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
X = pale yellow
Dispersion
None
Not Available
Transparency
Translucent, Translucent to opaque
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Refractive Index
1.669-1.723
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Optic Character
Not Available
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Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.011-0.037
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Clarity
Translucent
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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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Dumortierite Vs Cordierite Fracture
Fracture is an important parameter when you compare Dumortierite and Cordierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite 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 Dumortierite is ConchoidalWalter Schumann, Fibrous and Gemstones of the world (2001) More from other references. Cordierite fracture is Brittle, Conchoidal and Subconchoidal.
Dumortierite Vs Cordierite Luster
A primary knowledge about Dumortierite 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. Dumortierite exhibits Vitreous luster. Cordierite, on other hand, exhibits Greasy and Vitreous luster.