Benitoite Vs Achroite
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, with specimens over 2 ct. being extremely rare.
Afghanistan, Sri Lanka
Color
Violet, Blue, Colorless, pink, White
Colorless, Blue
Streak
White
Not Available
For which Rashi?
Not Available
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Planet
Not Available
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Element of Planets
Not Available
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Energy
Not Available
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Finger
Not Available
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Ring Metal
Not Available
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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
Not Available
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Solubility
Insoluble: HCl
Not Available
Durability
Not Available
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Specific Gravity
3.61-3.68
2.90-3.40
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
[10 1 1] poor
Not Available
Mohs Hardness
6-6.5
7-7.5
Chemical Composition
BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Luster
Vitreous
Not Available
Pleochroism
O = colorless; E = purple
Not Available
Transparency
Transparent
Transparent, Translucent
Refractive Index
1.757-1.804
1.614-1.666
Optic Character
Not Available
Not Available
Crystal System
Hexagonal
Not Available
Birefringence
0.047
0.014-0.040
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 Achroite Fracture
Fracture is an important parameter when you compare Benitoite and Achroite Physical Properties. It is necessary to understand the significance of these properties, before you compare Benitoite Vs Achroite 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) and Brittle. Achroite fracture is Uneven, ConchoidalWalter Schumann and Gemstones of the world (2001).
Benitoite Vs Achroite Luster
A primary knowledge about Benitoite vs Achroite 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.
