Tourmaline Vs Sphene
Origin
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Madagascar, India, Brazil, USA, Canada, Pakistan, Russia
Color
Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink
Yellow, Brown
Streak
White
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For which Rashi?
Libra
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Planet
Venus, Mars
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Element of Planets
Water
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Finger
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Ring Metal
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Energy
Projective
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Deities
Venus
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Not to wear with
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Powers
Love, Courage
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Planetary
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Talisman
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Tenacity
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Solubility
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Durability
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Specific Gravity
2.85-3.35
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Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
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Cleavage
Indistinct
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Mohs Hardness
7-7.5
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Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
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Luster
Vitreous
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Pleochroism
typically moderate to strong
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Transparency
Transparent, Translucent, Transparent to opaque
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Refractive Index
1.614-1.666
1.84-2.11
Optic Character
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Crystal System
Trigonal
monoclinic
Birefringence
0.014-0.040
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Clarity
Transparent
Color grading system
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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Digestive
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Psychology
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Healing
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Qualities Associated
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Tourmaline Vs Sphene Fracture
Fracture is an important parameter when you compare Tourmaline and Sphene Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline Vs Sphene 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.
Tourmaline Vs Sphene Luster
A primary knowledge about Tourmaline vs Sphene 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.