Alexandrite Vs Blue John
Origin
Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Origins: Russia
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Color
Green
White, Colorless, Blue, Red, Green, Yellow, Violet
For which Rashi?
Scorpio
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Element of Planets
Earth
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Specific Gravity
3.69-3.81
3.00-3.25
Cleavage
1,1 ; 3,2.
Perfect
Chemical Composition
BeAl 2 O 4
CaF 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Transparency
Transparent, Transparent to nearly opaque
Transparent
Refractive Index
1.739-1.770
1.432-1.436
Optic Character
Biaxial/+
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Crystal System
Orthorhombic
-
Birefringence
0.007-0.010
-9999
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Aids in grounding and protection
Supports heart health
Respiratory
Excellent
Excellent
Reproductive
Supports reproductive health
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Psychology
Transformation
Harmony
Healing
Emotional healing
Emotional healing
Qualities Associated
Transformation
Mental Clarity
Alexandrite Vs Blue John Fracture
Fracture is an important parameter when you compare Alexandrite and Blue John Physical Properties. It is necessary to understand the significance of these properties, before you compare Alexandrite 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.
Alexandrite Vs Blue John Luster
A primary knowledge about Alexandrite 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. Alexandrite exhibits Vitreous luster.