Origin
Afghanistan
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
Violet, Blue, White
Yellow, Brown, Colorless, White, gray, Brownish, Yellow
For which Rashi?
Sagittarius
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Planet
Venus
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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
Venus
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Not to wear with
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Powers
Protection, Courage
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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
2.50-3.00
2.97-3.03
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Greasy
Vitreous, Greasy
Pleochroism
AbsentWalter Schumann
Weak: pale yellow yellow
Transparency
Opaque
Gemmological Tables (2004) More from other references
Refractive Index
1.500-1.670
1.627-1.639
Optic Character
Not Available
Biaxial/+
Crystal System
Trigonal
Orthorhombic
Birefringence
Not Available
0.006
Clarity
Gemstones of the world (2001)
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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Lapis lazuli Vs Danburite Fracture
Fracture is an important parameter when you compare Lapis lazuli and Danburite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli 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 Lapis lazuli is ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal. Danburite fracture is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Uneven and Uneven.
Lapis lazuli Vs Danburite Luster
A primary knowledge about Lapis lazuli 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. Lapis lazuli exhibits Greasy and Vitreous luster. Danburite, on other hand, exhibits Greasy and Vitreous luster.