Dumortierite Vs Gedrite
Origin
Southern and central Africa
Southern and central Africa
Color
Blue, Violet, Brown, White, Greenish, pink
Brown, Green, gray, White
For which Rashi?
Leo, Sagittarius
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Element of Planets
Water
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Specific Gravity
3.26-3.41
3.15-3.259
Fracture
Fibrous, ConchoidalWalter Schumann
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Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
Mohs Hardness
7-8.5
5.5-6
Chemical Composition
AlAl6O3BSi3O18
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Weak to moderate
Transparency
Translucent, Translucent to opaque
Transparent
Refractive Index
1.669-1.723
1.625-1.718
Crystal System
Orthorhombic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
0.011-0.037
-9999
Clarity
Translucent
Transparent
Neurological
Enhances mental clarity and focus
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Psychology
Patience
Focus
Healing
Emotional healing
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Qualities Associated
Patience
Protection
Dumortierite Vs Gedrite Fracture
Fracture is an important parameter when you compare Dumortierite and Gedrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Gedrite 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 and ConchoidalWalter Schumann.
Dumortierite Vs Gedrite Luster
A primary knowledge about Dumortierite vs Gedrite 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. Gedrite, on other hand, exhibits Vitreous luster.