Lapis lazuli Vs Sylvite
Origin
Afghanistan
Mexico, Canada
Color
Violet, Blue, White
Colorless, White, Blue, Red, Reddish, Brownish
For which Rashi?
Sagittarius
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Planet
Venus
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Element of Planets
Water
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Finger
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Ring Metal
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Energy
Receptive
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Deities
Venus
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Not to wear with
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Powers
Protection, Courage
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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
2.50-3.00
1.993
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Brittle
Cleavage
3,6
Perfect on [100], [010], [001]
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
Vitreous
Pleochroism
AbsentWalter Schumann
Visible in colored crystals
Dispersion
None
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Transparency
Opaque
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Refractive Index
1.500-1.670
1.4903
Optic Character
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Crystal System
Trigonal
Isometric
Birefringence
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Clarity
Gemstones of the world (2001)
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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 Sylvite Fracture
Fracture is an important parameter when you compare Lapis lazuli and Sylvite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli Vs Sylvite 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. Sylvite fracture is Brittle and Uneven.
Lapis lazuli Vs Sylvite Luster
A primary knowledge about Lapis lazuli vs Sylvite 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. Sylvite, on other hand, exhibits Vitreous luster.