Origin
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, 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
Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink
Yellow, Brown, Colorless, White, gray, Brownish, Yellow
For which Rashi?
Libra
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Planet
Venus, Mars
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Element of Planets
Water
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Energy
Projective
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Finger
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Ring Metal
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Deities
Venus
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Not to wear with
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Powers
Love, 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
Not Available
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Specific Gravity
2.85-3.35
2.97-3.03
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
Cleavage
Indistinct
{001} Poor
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous
Vitreous, Greasy
Pleochroism
typically moderate to strong
Weak: pale yellow yellow
Transparency
Transparent, Translucent, Transparent to opaque
Gemmological Tables (2004) More from other references
Refractive Index
1.614-1.666
1.627-1.639
Optic Character
Not Available
Biaxial/+
Crystal System
Trigonal
Orthorhombic
Birefringence
0.014-0.040
0.006
Clarity
Transparent
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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Tourmaline Vs Danburite Fracture
Fracture is an important parameter when you compare Tourmaline and Danburite Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline 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 Tourmaline is Uneven, Conchoidal, ConchoidalArthur Thomas and Gemstones (2009). Danburite fracture is Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal and Brittle.
Tourmaline Vs Danburite Luster
A primary knowledge about Tourmaline 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. Tourmaline exhibits Vitreous luster. Danburite, on other hand, exhibits Vitreous and Greasy luster.
