Alexandrite Vs Riebeckite
Origin
Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Color: color change, from bluish green (daylight) to purple, red or brown (incandescent light), Hardness: 8, Refractive index: 1.74 1.77, Density: 3.68 3.80, Chemical composition: BeAl2O4, Crystal structure: orthorhombic, Origins: Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma
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Color
Green
Black, Blue, Yellow, Green
Streak
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Grey, Greenish, Brown
For which Rashi?
Scorpio
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Planet
Venus
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Element of Planets
Earth
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Finger
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Ring Metal
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Energy
Projective, Receptive
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Deities
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Not to wear with
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Powers
Love
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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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Durability
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Specific Gravity
3.69-3.81
3.28-3.44
Fracture
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Uneven, Splintery, Brittle
Cleavage
1,1 ; 3,2.
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
Mohs Hardness
8.5
5.0-6.0
Chemical Composition
BeAl 2 O 4
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Luster
Vitreous
Vitreous, Silky
Pleochroism
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X = blue
Dispersion
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Transparency
Transparent, Transparent to nearly opaque
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Refractive Index
1.739-1.770
1.680-1.698
Optic Character
Biaxial/+
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Crystal System
Orthorhombic
monoclinic
Birefringence
0.007-0.010
0.005-0.008
Clarity
Transparent
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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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Alexandrite Vs Riebeckite Fracture
Fracture is an important parameter when you compare Alexandrite and Riebeckite Physical Properties. It is necessary to understand the significance of these properties, before you compare Alexandrite Vs Riebeckite 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. Riebeckite fracture is Brittle, Splintery and Uneven.
Alexandrite Vs Riebeckite Luster
A primary knowledge about Alexandrite vs Riebeckite 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. Alexandrite exhibits Vitreous luster. Riebeckite, on other hand, exhibits Silky and Vitreous luster.