Lapis lazuli Vs Jet
Color
Violet, Blue, White
Black
Streak
Blue
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For which Rashi?
Sagittarius
Capricorn
Element of Planets
Water
Earth
Finger
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Ring Metal
Not Available
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Energy
Receptive
Receptive
Not to wear with
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Powers
Protection, Courage
Protection
Planetary
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Talisman
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Tenacity
Not Available
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
2.50-3.00
1.19-1.35
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
3,6
Not Available
Chemical Composition
The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)8Al6Si6O24(S,SO)4
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Luster
Vitreous, Greasy
Waxy
Pleochroism
AbsentWalter Schumann
AbsentWalter Schumann
Transparency
Opaque
Gemmological Tables (2004) More from other references
Refractive Index
1.500-1.670
1.640-1.680
Optic Character
Not Available
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Crystal System
Trigonal
Amorphous
Birefringence
Not Available
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Clarity
Gemstones of the world (2001)
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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Lapis lazuli Vs Jet Fracture
Fracture is an important parameter when you compare Lapis lazuli and Jet Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli Vs Jet 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 Lapis lazuli is ConchoidalWalter Schumann, Gemstones of the world (2001) and Uneven-Conchoidal. Jet fracture is ConchoidalWalter Schumann, ConchoidalWalter Schumann and Gemstones of the world (2001) More from other references.
Lapis lazuli Vs Jet Luster
A primary knowledge about Lapis lazuli vs Jet 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 exhibits Greasy and Vitreous luster. Jet, on other hand, exhibits Waxy luster.