Origin
Southern and central Africa, violet, blue, violet, blue
USA, Mexico, Brazil, Switzerland, Sri Lanka, Burma, Madagascar, Color: colorless, light yellow, light pink, Hardness: 7, Refractive index: 1.63 1.64, Density: 2.98 3.03, Chemical composition: Ca(B2Si2O8), Crystal structure: orthorhombic, Origins: USA, Mexico, Brazil, Germany, Switzerland, Sri Lanka, Burma, Madagascar, Japan. Colorless danburites are common, with light pink or yellowish stones being more rare and expensive. Only eye clean pieces are valuable.
Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Yellow, Brown, Colorless, White, gray, Brownish, Yellow
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
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Ring Metal
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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
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Brittle
Solubility
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Durability
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Specific Gravity
3.26-3.41
2.97-3.03
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{001} Poor
Chemical Composition
AlAl6O3BSi3O18
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Greasy
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Weak: pale yellow yellow
Transparency
Translucent, Translucent to opaque
Gemmological Tables (2004) More from other references
Refractive Index
1.669-1.723
1.627-1.639
Optic Character
Not Available
Biaxial/+
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.011-0.037
0.006
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda
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 Danburite Fracture
Fracture is an important parameter when you compare Dumortierite and Danburite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Danburite 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. Danburite fracture is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Uneven and Uneven.
Dumortierite Vs Danburite Luster
A primary knowledge about Dumortierite vs Danburite 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. Danburite, on other hand, exhibits Greasy and Vitreous luster.