Howlite Vs Poldervaartite
Origin
Southern and central Africa
Southern and central Africa
Color
Blue, Colorless, White
Colorless, White
For which Rashi?
Gemini, Virgo, Gemini, Virgo, Gemini, Virgo
Not Available
Planet
Moon
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Element of Planets
Earth
Not Available
Finger
Not Available
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Ring Metal
Not Available
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Energy
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Deities
Quan Yin
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Not to wear with
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Powers
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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
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Durability
Not Available
Not Available
Specific Gravity
2.45-2.58
2.91
Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Handbook of mineralogy (2001)
Mohs Hardness
3-3.5
Not Available
Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Mn2+ ) 2(SiO 3OH)(OH)Anthony et al , Handbook of Mineralogy (2001)
Pleochroism
NilArthur Thomas
Weak: colorless light gray bluish grayAnthony et al
Dispersion
Not Available
Not Available
Transparency
Gemmological Tables (2004) More from other references
Transparent
Refractive Index
1.583-1.608
1.634-1.656
Optic Character
Not Available
Not Available
Crystal System
monoclinic
Not Available
Birefringence
0.019
Not Available
Clarity
Gemmological Tables (2004) More from other references
Transparent
Neurological
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Cardiovascular
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Respiratory
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Reproductive
Not Available
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Digestive
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Psychology
Not Available
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Healing
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Qualities Associated
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Howlite Vs Poldervaartite Fracture
Fracture is an important parameter when you compare Howlite and Poldervaartite Physical Properties. It is necessary to understand the significance of these properties, before you compare Howlite Vs Poldervaartite 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 Howlite is Brittle, Conchoidal, Gemstones (2009), Gemstones (2009), UnevenArthur Thomas and UnevenArthur Thomas. Poldervaartite fracture is Handbook of mineralogy (2001).
Howlite Vs Poldervaartite Luster
A primary knowledge about Howlite vs Poldervaartite 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. Howlite exhibits Vitreous luster. Poldervaartite, on other hand, exhibits Vitreous luster.