Origin
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Austria, Zimbabwe, Australia
Color
Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink
Red, Brown, Violet, Red, Brown
For which Rashi?
Libra
Not Available
Planet
Venus, Mars
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Element of Planets
Water
Not Available
Finger
Not Available
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Ring Metal
Not Available
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Energy
Projective
Not Available
Deities
Venus
Not Available
Not to wear with
Not Available
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Powers
Love, Courage
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Planetary
Not Available
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Talisman
Not Available
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Tenacity
Not Available
Brittle
Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.85-3.35
5.06-5.08
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Subconchoidal, Conchoidal, Brittle
Cleavage
Indistinct
Poor on [111].
Mohs Hardness
7-7.5
3-3.25
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Cu5FeS4
Luster
Vitreous
Not Available
Pleochroism
typically moderate to strong
Weak
Transparency
Transparent, Translucent, Transparent to opaque
Not Available
Refractive Index
1.614-1.666
Not Available
Optic Character
Not Available
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Crystal System
Trigonal
Orthorhombic
Birefringence
0.014-0.040
Not Available
Clarity
Transparent
Not Available
Neurological
Not Available
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Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
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Tourmaline Vs Bornite Fracture
Fracture is an important parameter when you compare Tourmaline and Bornite Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline Vs Bornite 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. Bornite fracture is Brittle, Conchoidal, Subconchoidal and Uneven.
Tourmaline Vs Bornite Luster
A primary knowledge about Tourmaline vs Bornite 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.