Origin
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Canada, Southern and central Africa, Italy, Australia, India
Color
Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink
Violet, Brownish, Yellow, Reddish, Pale pink
For which Rashi?
Libra
Virgo
Planet
Venus, Mars
Mercury, Jupiter
Element of Planets
Water
Water
Finger
Not Available
Not Available
Ring Metal
Not Available
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Energy
Projective
Receptive
Not to wear with
Not Available
Not Available
Powers
Love, Courage
Not Available
Planetary
Not Available
All
Talisman
Not Available
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Tenacity
Not Available
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Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.35
2.69-2.79
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Indistinct
Poor on {0001}
Mohs Hardness
7-7.5
5.5-6.5
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
typically moderate to strong
Weak
Transparency
Transparent, Translucent, Transparent to opaque
Translucent
Refractive Index
1.614-1.666
1.607-1.612
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Hexagonal
Birefringence
0.014-0.040
0.003
Clarity
Transparent
Translucent
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 Sugilite Fracture
Fracture is an important parameter when you compare Tourmaline and Sugilite Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline Vs Sugilite 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. Sugilite fracture is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Tourmaline Vs Sugilite Luster
A primary knowledge about Tourmaline vs Sugilite 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. Sugilite, on other hand, exhibits Vitreous luster.