Grossular Vs Holmquistite
Origin
Sri Lanka, India, Brazil
Southern and central Africa
Color
Green, Brown, Brown, Colorless, Green, gray, Yellow
Black, Blue, Violet
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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Finger
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Ring Metal
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Energy
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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
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Specific Gravity
3.55-3.73
2.95-3.13
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Not Available
Cleavage
none
{210} Perfect
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Luster
Greasy, Vitreous
Vitreous
Pleochroism
None
Strong in shades of violet when dark-colored.Anthony et al
Transparency
Gemmological Tables (2004) More from other references
Transparent
Refractive Index
1.730-1.760
1.622-1.666
Optic Character
Not Available
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Crystal System
cubic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
Birefringence
0.020
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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 Holmquistite Fracture
Fracture is an important parameter when you compare Grossular and Holmquistite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grossular Vs Holmquistite 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 Brittle, Conchoidal, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009) and Uneven.
Grossular Vs Holmquistite Luster
A primary knowledge about Grossular vs Holmquistite 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. Holmquistite, on other hand, exhibits Vitreous luster.