Origin
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Tanzania, Madagascar, Kenya, Sri Lanka, Burma, Australia
Color
Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink
Green, Brown, Colorless, Greenish, Yellow
For which Rashi?
Libra
Not Available
Planet
Venus, Mars
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Element of Planets
Water
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Finger
Not Available
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Ring Metal
Not Available
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Energy
Projective
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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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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.85-3.35
3.25-3.45
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven
Cleavage
Indistinct
Good on {110}
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Pleochroism
typically moderate to strong
X = colorless to green; Y = colorless
Transparency
Transparent, Translucent, Transparent to opaque
Gemmological Tables (2004) More from other references
Refractive Index
1.614-1.666
1.660-1.685
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Orthorhombic
Birefringence
0.014-0.040
0.012-0.017
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 Kornerupine Fracture
Fracture is an important parameter when you compare Tourmaline and Kornerupine Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline Vs Kornerupine 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 Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven. Kornerupine fracture is Brittle, ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009), Gemstones (2009) and Uneven.
Tourmaline Vs Kornerupine Luster
A primary knowledge about Tourmaline vs Kornerupine 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. Kornerupine, on other hand, exhibits Vitreous luster.