Dumortierite Vs Ludlamite
Origin
Southern and central Africa, violet, blue
USA
Color
Blue, Violet, Brown, White, Greenish, pink
Green, Colorless, Greenish, White
Streak
White
Greenish, White
For which Rashi?
Leo, Sagittarius
Not Available
Planet
Saturn
Not Available
Element of Planets
Water
Not Available
Energy
Receptive
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
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
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
3.1-3.2
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
UnevenArthur Thomas, Gemstones (2009)
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Vitreous, pearly on cleavage
Chemical Composition
AlAl6O3BSi3O18
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
NilArthur Thomas
Dispersion
None
Not Available
Transparency
Translucent, Translucent to opaque
Gemmological Tables (2004) More from other references
Refractive Index
1.669-1.723
1.653-1.693
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
monoclinic
Birefringence
0.011-0.037
0.038-0.044
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Not Available
Not Available
Cardiovascular
Not Available
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Respiratory
Not Available
Not Available
Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
Not Available
Healing
Not Available
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Qualities Associated
Not Available
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Dumortierite Vs Ludlamite Fracture
Fracture is an important parameter when you compare Dumortierite and Ludlamite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Ludlamite 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 Fibrous, ConchoidalWalter Schumann and Gemstones of the world (2001) More from other references. Ludlamite fracture is UnevenArthur Thomas and Gemstones (2009).
Dumortierite Vs Ludlamite Luster
A primary knowledge about Dumortierite vs Ludlamite 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. Ludlamite, on other hand, exhibits Vitreous and Pearly luster.