Origin
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Southern and central Africa
Color
Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink
Violet, Brownish, Black, pink, Red, Reddish
For which Rashi?
Libra
Not Available
Planet
Venus, Mars
Not Available
Element of Planets
Water
Not Available
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
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
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.85-3.35
3.2-3.4
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
Cleavage
Indistinct
[100] [001] perfect
Mohs Hardness
7-7.5
4-4.5
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous
Not Available
Pleochroism
typically moderate to strong
StrongArthur Thomas
Transparency
Transparent, Translucent, Transparent to opaque
TranslucentWalter Schumann, Gemstones of the world (2001) More from other references
Refractive Index
1.614-1.666
1.85-1.92
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Orthorhombic
Birefringence
0.014-0.040
0.070
Clarity
Transparent
TranslucentWalter Schumann
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 Purpurite Fracture
Fracture is an important parameter when you compare Tourmaline and Purpurite Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline Vs Purpurite 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. Purpurite fracture is Brittle, Gemstones (2009), Uneven and UnevenArthur Thomas.
Tourmaline Vs Purpurite Luster
A primary knowledge about Tourmaline vs Purpurite 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.