Origin
Southern and central Africa, violet, blue, violet, blue
India
Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Yellow, Greenish, Blue, Brown, Green, gray
For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
Not Available
Planet
Saturn
Not Available
Element of Planets
Water
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Not Available
Deities
Isis
Not Available
Not to wear with
Not Available
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Powers
Healing
Not Available
Planetary
Not Available
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Talisman
Not Available
Not Available
Tenacity
Not Available
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Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
4.23
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{111} Distinct
Mohs Hardness
7-8.5
3.5-4
Chemical Composition
AlAl6O3BSi3O18
CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
Greasy, Subadamantine
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
In deeply colored specimens: blue greenAnthony et al
Dispersion
None
Not Available
Transparency
Translucent, Translucent to opaque
Transparent
Refractive Index
1.669-1.723
1.974-1.984
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Not Available
Birefringence
0.011-0.037
Not Available
Clarity
Translucent
Transparent
Neurological
Not Available
Not Available
Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
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Dumortierite Vs Powellite Fracture
Fracture is an important parameter when you compare Dumortierite and Powellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Powellite 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. Powellite fracture is Brittle, Conchoidal, Handbook of mineralogy (2001), Handbook of mineralogy (2001), UnevenAnthony et al and UnevenAnthony et al.
Dumortierite Vs Powellite Luster
A primary knowledge about Dumortierite vs Powellite 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. Powellite, on other hand, exhibits Greasy and Subadamantine luster.