Jacobsite Vs Lapis lazuli
Origin
Southern and central Africa
Afghanistan
Color
Black, Brownish, White, Brown
Violet, Blue, White
Streak
Reddish, Black
Blue
For which Rashi?
Not Available
Sagittarius
Planet
Not Available
Venus
Element of Planets
Not Available
Water
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
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Receptive
Deities
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Venus
Not to wear with
Not Available
Not Available
Powers
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Protection, Courage
Planetary
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Talisman
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Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
4.76-5.03
2.50-3.00
Fracture
Conchoidal, Brittle
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Mohs Hardness
5.5-6.5
5.5
Chemical Composition
(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
Luster
Not Available
Vitreous, Greasy
Pleochroism
Not Available
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Translucent
Opaque
Refractive Index
Not Available
1.500-1.670
Optic Character
Not Available
Not Available
Crystal System
Not Available
Trigonal
Birefringence
Not Available
Not Available
Clarity
Translucent
Gemstones of the world (2001)
Neurological
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Cardiovascular
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Respiratory
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Reproductive
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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
Not Available
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Jacobsite Vs Lapis lazuli Fracture
Fracture is an important parameter when you compare Jacobsite and Lapis lazuli Physical Properties. It is necessary to understand the significance of these properties, before you compare Jacobsite Vs Lapis lazuli 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. Lapis lazuli fracture is ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal.
Jacobsite Vs Lapis lazuli Luster
A primary knowledge about Jacobsite vs Lapis lazuli 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. Lapis lazuli, on other hand, exhibits Greasy and Vitreous luster.