Grossular Vs Piemontite
Origin
Sri Lanka, India, Brazil
Italy
Color
Green, Brown, Brown, Colorless, Green, gray, Yellow
Red, Reddish, Brown, Black, Yellow
Streak
Brownish, White, Brownish, White
Red
For which Rashi?
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Planet
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Element of Planets
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Energy
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Finger
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Ring Metal
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Deities
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Not to wear with
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Powers
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Planetary
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Talisman
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Tenacity
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Brittle
Solubility
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Durability
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Specific Gravity
3.55-3.73
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Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Uneven, Splintery
Cleavage
none
[001] good, [100] distinct
Mohs Hardness
7-7.5
6-6.5
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Not Available
Luster
Greasy, Vitreous
Vitreous
Transparency
Gemmological Tables (2004) More from other references
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Refractive Index
1.730-1.760
1.725-1.756
Optic Character
Not Available
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Crystal System
cubic
monoclinic
Birefringence
0.020
0.025-0.076
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
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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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Grossular Vs Piemontite Fracture
Fracture is an important parameter when you compare Grossular and Piemontite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grossular Vs Piemontite 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 Grossular is Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal and Brittle. Piemontite fracture is Uneven and Splintery.
Grossular Vs Piemontite Luster
A primary knowledge about Grossular vs Piemontite 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. Grossular exhibits Greasy and Vitreous luster. Piemontite, on other hand, exhibits Vitreous luster.
