Origin
Brazil, Madagascar, Zambia, Sri Lanka, Burma, Russia, USA, Afghanistan
Italy
Color
Green, Blue, Yellow, Red, Brown, White, Colorless, Blue, Red, Green, Yellow, pink
Green, Green, gray, Brown, Black
Streak
White
Greenish, White, Greenish, White
For which Rashi?
Libra
Not Available
Planet
Venus, Mars
Not Available
Element of Planets
Water
Not Available
Energy
Projective
Not Available
Finger
Not Available
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Ring Metal
Not Available
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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
2.58-2.80
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle, Metallic, Conchoidal, Handbook of mineralogy (2001)
Cleavage
Indistinct
{001} Good
Mohs Hardness
7-7.5
5-5.5
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Waxy, Silky, Resinous, Greasy
Pleochroism
typically moderate to strong
pale greenish yellow.
Transparency
Transparent, Translucent, Transparent to opaque
Translucent
Refractive Index
1.614-1.666
1.530-1.575
Optic Character
Not Available
Not Available
Crystal System
Trigonal
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
Birefringence
0.014-0.040
Not Available
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 Antigorite Fracture
Fracture is an important parameter when you compare Tourmaline and Antigorite Physical Properties. It is necessary to understand the significance of these properties, before you compare Tourmaline Vs Antigorite 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). Antigorite fracture is Conchoidal, Brittle, Metallic, Conchoidal and Handbook of mineralogy (2001).
Tourmaline Vs Antigorite Luster
A primary knowledge about Tourmaline vs Antigorite 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. Antigorite, on other hand, exhibits Waxy, Silky, Resinous and Greasy luster.
