Jacobsite Vs Lazurite
Origin
Southern and central Africa
Afghanistan, Southern and central Africa
Color
Black, Brownish, White, Brown
Blue, Greenish, Violet
Streak
Reddish, Black
Blue, 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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Brittle
Solubility
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Soluble
Durability
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Specific Gravity
4.76-5.03
2.75
Fracture
Conchoidal, Brittle
Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
None
Imperfect on {110}
Mohs Hardness
5.5-6.5
5.5
Chemical Composition
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.
Luster
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Vitreous
Pleochroism
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Dispersion
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Transparency
Translucent
Gemmological Tables (2004) More from other references
Refractive Index
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1.500
Optic Character
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Crystal System
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Isometric
Birefringence
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Clarity
Translucent
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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Jacobsite Vs Lazurite Fracture
Fracture is an important parameter when you compare Jacobsite and Lazurite Physical Properties. It is necessary to understand the significance of these properties, before you compare Jacobsite Vs Lazurite 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 Jacobsite is Brittle and Conchoidal. Lazurite fracture is Brittle, Conchoidal, Gemstones (2009), Uneven and UnevenArthur Thomas.
Jacobsite Vs Lazurite Luster
A primary knowledge about Jacobsite vs Lazurite 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. Lazurite, on other hand, exhibits Vitreous luster.