Benitoite Vs Blue John
Origin
USA, Color: blue or violetish blue, colorless, Hardness: 6 6.5, Refractive index: 1.76 1.80, Density: 3.60 3.68, Chemical composition: BaTiSi3O9, Crystal structure: hexagonal, Lustre: vitreous, Origins: San Benito Country, USA. Very rare collectors stone. Found only in San Benito County, California, USA, with specimens over 2 ct. being extremely rare.
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Color
Violet, Blue, Colorless, Blue, pink, White, Colorless
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
White
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For which Rashi?
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Planet
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Element of Planets
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Energy
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Finger
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Ring Metal
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Deities
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Not to wear with
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Powers
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Planetary
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Talisman
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Tenacity
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Solubility
Insoluble: HCl
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Durability
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Specific Gravity
3.61-3.68
3.00-3.25
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
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Cleavage
[10 1 1] poor
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Mohs Hardness
6-6.5
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Chemical Composition
BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous
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Pleochroism
O = colorless; E = purple
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Transparency
Transparent
Transparent
Refractive Index
1.757-1.804
1.432-1.436
Optic Character
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Crystal System
Hexagonal
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Birefringence
0.047
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Clarity
Transparent
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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Benitoite Vs Blue John Fracture
Fracture is an important parameter when you compare Benitoite and Blue John Physical Properties. It is necessary to understand the significance of these properties, before you compare Benitoite Vs Blue John 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 Benitoite is Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal and Brittle.
Benitoite Vs Blue John Luster
A primary knowledge about Benitoite vs Blue John 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. Benitoite exhibits Vitreous luster.
