Lapis lazuli Vs Kyanite
Origin
Afghanistan
Brazil, USA, Switzerland, Kenya, Mozambique, Russia, Nepal, India, Burma
Color
Violet, Blue, White
Blue, Yellow, Colorless, White, gray, Green, Black
For which Rashi?
Sagittarius
Aries, Libra, Taurus, Aries, Libra, Taurus, Aries, Libra, Taurus
Element of Planets
Water
Water
Finger
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Ring Metal
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Energy
Receptive
Receptive
Deities
Venus
Endurance, Meditation, Love
Not to wear with
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Powers
Protection, Courage
Love
Planetary
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Talisman
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Tenacity
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Brittle
Solubility
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Durability
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Specific Gravity
2.50-3.00
3.53-3.65
Fracture
Uneven-Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Splintery, Brittle, Metallic
Cleavage
3,6
[100] perfect [010] imperfect with 79° angle between
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, Pearly
Pleochroism
AbsentWalter Schumann
Trichroic
Dispersion
None
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Transparency
Opaque
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Refractive Index
1.500-1.670
1.71-1.74
Optic Character
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Crystal System
Trigonal
Triclinic
Birefringence
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Clarity
Gemstones of the world (2001)
Color grading system
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 Kyanite Fracture
Fracture is an important parameter when you compare Lapis lazuli and Kyanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Lapis lazuli Vs Kyanite 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. Kyanite fracture is Brittle, Metallic and Splintery.
Lapis lazuli Vs Kyanite Luster
A primary knowledge about Lapis lazuli vs Kyanite 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. Kyanite, on other hand, exhibits Pearly and Vitreous luster.