Simpsonite Vs Howlite
Origin
Australia
Southern and central Africa
Color
Colorless, White, Brownish, Yellow, Brown
Blue, Colorless, White
For which Rashi?
Not Available
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
Planet
Not Available
Moon
Element of Planets
Not Available
Earth
Finger
Not Available
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Ring Metal
Not Available
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Energy
Not Available
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Deities
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Quan Yin
Not to wear with
Not Available
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Powers
Not Available
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Planetary
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Talisman
Not Available
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Tenacity
Not Available
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Solubility
Not Available
Not Available
Durability
Not Available
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Specific Gravity
Not Available
2.45-2.58
Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Mohs Hardness
7-7.5
3-3.5
Chemical Composition
Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Adamantine
Vitreous
Pleochroism
NilArthur Thomas
NilArthur Thomas
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
Refractive Index
1.994-2.040
1.583-1.608
Optic Character
Not Available
Not Available
Crystal System
Not Available
monoclinic
Birefringence
0.046
0.019
Clarity
Gemmological Tables (2004) More from other references
Gemmological Tables (2004) More from other references
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
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Simpsonite Vs Howlite Fracture
Fracture is an important parameter when you compare Simpsonite and Howlite Physical Properties. It is necessary to understand the significance of these properties, before you compare Simpsonite Vs Howlite 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 Simpsonite is Brittle, Conchoidal, ConchoidalAnthony et al, ConchoidalAnthony et al, Handbook of mineralogy (2001) and Handbook of mineralogy (2001). Howlite fracture is Brittle, Conchoidal, Gemstones (2009), Gemstones (2009), UnevenArthur Thomas and UnevenArthur Thomas.
Simpsonite Vs Howlite Luster
A primary knowledge about Simpsonite vs Howlite 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. Simpsonite exhibits Adamantine luster. Howlite, on other hand, exhibits Vitreous luster.