Origin
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Australia, Canada
Color
Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
White
Not Available
For which Rashi?
Libra
Not Available
Planet
Venus, Mars
Not Available
Element of Planets
Water
Not Available
Energy
Projective
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Venus
Not Available
Not to wear with
Not Available
Not Available
Powers
Love, Courage
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.85-3.35
1.98-2.50
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
Indistinct
Not Available
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.
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Luster
Vitreous
Not Available
Pleochroism
typically moderate to strong
AbsentWalter Schumann
Transparency
Transparent, Translucent, Transparent to opaque
Translucent
Refractive Index
1.614-1.666
1.37-1.52
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Not Available
Birefringence
0.014-0.040
Not Available
Clarity
Transparent
Translucent
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Tourmaline Vs White Opal Fracture
Fracture is an important parameter when you compare Tourmaline and White Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline Vs White Opal 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). White Opal fracture is Conchoidal, Conchoidal and Gemstones of the world (2001).
Tourmaline Vs White Opal Luster
A primary knowledge about Tourmaline vs White Opal 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.
