Lapis lazuli Vs Andean Opal
Origin
Afghanistan
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Color
Violet, Blue, White
Blue
Streak
Blue
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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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Solubility
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Durability
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Specific Gravity
2.50-3.00
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Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
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Cleavage
3,6
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Mohs Hardness
5.5
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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
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Pleochroism
AbsentWalter Schumann
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Dispersion
None
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Transparency
Opaque
Transparent
Refractive Index
1.500-1.670
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Optic Character
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Crystal System
Trigonal
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Birefringence
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Clarity
Gemstones of the world (2001)
Transparent
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 Andean Opal Fracture
Fracture is an important parameter when you compare Lapis lazuli and Andean Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli Vs Andean Opal 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.
Lapis lazuli Vs Andean Opal Luster
A primary knowledge about Lapis lazuli vs Andean Opal 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.