Fayalite Vs Nuummite
Origin
Southern and central Africa
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Color
Yellow, Brown, Black, Black
Green
Streak
White
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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
4.392
3.18-3.37
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Conchoidal
Cleavage
{010} moderate, {100} imperfect
Perfect on 210
Mohs Hardness
6.5-7
5.5-6
Chemical Composition
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
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Luster
Vitreous, Resinous
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Pleochroism
Faint
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Dispersion
Not Available
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Transparency
TransparentAnthony et al, Handbook of mineralogy (2001)
Gemmological Tables (2004) More from other references
Refractive Index
1.827-1.879
1.635-1.663
Optic Character
Not Available
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Crystal System
Orthorhombic
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Birefringence
0.042-0.051
0.0170-0.230
Clarity
TransparentAnthony et al
Gemmological Tables (2004) More from other references
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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Fayalite Vs Nuummite Fracture
Fracture is an important parameter when you compare Fayalite and Nuummite Physical Properties. It is necessary to understand the significance of these properties, before you compare Fayalite Vs Nuummite 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 Fayalite is Brittle, Conchoidal, Conchoidal, ConchoidalAnthony et al and Handbook of mineralogy (2001). Nuummite fracture is Conchoidal.
Fayalite Vs Nuummite Luster
A primary knowledge about Fayalite vs Nuummite 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. Fayalite exhibits Resinous and Vitreous luster.