Origin
Australia, Southern and central Africa, green, brown, France
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, Germany, Japan. Colorless danburites are common, with light pink or yellowish stones being more rare and expensive. Only eye clean pieces are valuable.
Color
Green, Colorless, gray, Yellow, White
Yellow, Brown, Colorless, White, gray, Brownish
For which Rashi?
Libra
Not Available
Planet
Venus
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Element of Planets
Earth
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Energy
Receptive
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Finger
Not Available
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Ring Metal
Not Available
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Deities
Freya
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Not to wear with
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Powers
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Planetary
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Talisman
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.80-2.95
2.97-3.03
Fracture
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Cleavage
Distinct on [001]
{001} Poor
Chemical Composition
Ca2Al2Si3O12(OH)
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Greasy
Pleochroism
AbsentWalter Schumann
Weak: pale yellow yellow
Transparency
Translucent
Gemmological Tables (2004) More from other references
Refractive Index
1.611-1.673
1.627-1.639
Optic Character
Not Available
Biaxial/+
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.021-0.033
0.006
Clarity
TranslucentHerve Nicolas Lazzarelli
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Not Available
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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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Prehnite Vs Danburite Fracture
Fracture is an important parameter when you compare Prehnite and Danburite Physical Properties. It is necessary to understand the significance of these properties, before you compare Prehnite 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 Prehnite is Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle and Metallic. Danburite fracture is Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal and Brittle.
Prehnite Vs Danburite Luster
A primary knowledge about Prehnite 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. Prehnite exhibits Vitreous luster. Danburite, on other hand, exhibits Vitreous and Greasy luster.
