Grossular Vs Forsterite
Origin
Sri Lanka, India, Brazil
Southern and central Africa
Color
Green, Brown, Brown, Colorless, Green, gray, Yellow
Colorless, Green, Yellow, White, Colorless, Green, Yellow, White
Streak
Brownish, White, Brownish, White
White
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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Solubility
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Durability
Not Available
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Specific Gravity
3.55-3.73
3.23-3.26
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
none
Perfect on {010} imperfect on {100}
Mohs Hardness
7-7.5
6.5-7
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Greasy, Vitreous
Vitreous
Pleochroism
None
colorless.
Transparency
Gemmological Tables (2004) More from other references
Transparent
Refractive Index
1.730-1.760
1.635-1.671
Optic Character
Not Available
Not Available
Crystal System
cubic
Orthorhombic
Birefringence
0.020
0.033-0.042
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
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 Forsterite Fracture
Fracture is an important parameter when you compare Grossular and Forsterite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grossular Vs Forsterite 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. Forsterite fracture is Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal and Brittle.
Grossular Vs Forsterite Luster
A primary knowledge about Grossular vs Forsterite 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. Forsterite, on other hand, exhibits Vitreous luster.
