Tourmaline Vs Gahnospinel
Origin
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Sri Lanka
Color
Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink
Blue
Streak
White
Not Available
For which Rashi?
Libra
Sagittarius, Scorpio
Element of Planets
Water
Not Available
Energy
Projective
Projective
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Love, Courage
Money
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
3.65-4.55
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Indistinct
None, but may exhibit slight parting
Mohs Hardness
7-7.5
7.5-8
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Pleochroism
typically moderate to strong
AbsentWalter Schumann
Transparency
Transparent, Translucent, Transparent to opaque
Gemmological Tables (2004)
Refractive Index
1.614-1.666
1.735-1.790
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Isometric
Birefringence
0.014-0.040
Not Available
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
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
Not Available
Tourmaline Vs Gahnospinel Fracture
Fracture is an important parameter when you compare Tourmaline and Gahnospinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline Vs Gahnospinel 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). Gahnospinel fracture is ConchoidalArthur Thomas and Gemstones (2009).
Tourmaline Vs Gahnospinel Luster
A primary knowledge about Tourmaline vs Gahnospinel 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. Gahnospinel, on other hand, exhibits Vitreous luster.
