Alexandrite Vs Riebeckite
Origin
Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Origins: Russia
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Color
Green
Black, Blue, Yellow, Green
Streak
-
Grey, Greenish, Brown
For which Rashi?
Scorpio
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Element of Planets
Earth
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Specific Gravity
3.69-3.81
3.28-3.44
Fracture
-
Uneven, Splintery
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
Na2Fe2+3Fe3+2Si8O22(OH)2
Luster
Vitreous
Vitreous, Silky
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
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Aids in grounding and protection
Supports heart health
Respiratory
Excellent
Good
Reproductive
Supports reproductive health
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Psychology
Transformation
Empowerment
Healing
Emotional healing
Emotional healing
Qualities Associated
Transformation
Clear Thinking
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 Uneven and Splintery.
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 Vitreous and Silky luster.