Alexandrite Vs Jet
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
Spain
Streak
Not Available
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For which Rashi?
Scorpio
Capricorn
Element of Planets
Earth
Earth
Finger
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Ring Metal
Not Available
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Energy
Projective, Receptive
Receptive
Deities
Not Available
Cybele
Not to wear with
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Planetary
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Talisman
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Tenacity
Not Available
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Solubility
Not Available
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Durability
Not Available
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Specific Gravity
3.69-3.81
1.19-1.35
Fracture
Not Available
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
1,1 ; 3,2.
Not Available
Chemical Composition
BeAl 2 O 4
Not Available
Pleochroism
Not Available
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Transparent, Transparent to nearly opaque
Gemmological Tables (2004) More from other references
Refractive Index
1.739-1.770
1.640-1.680
Optic Character
Biaxial/+
Not Available
Crystal System
Orthorhombic
Amorphous
Birefringence
0.007-0.010
Not Available
Clarity
Transparent
Gemmological Tables (2004) More from other references
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 Jet Fracture
Fracture is an important parameter when you compare Alexandrite and Jet Physical Properties. It is necessary to understand the significance of these properties, before you compare Alexandrite Vs Jet 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. Jet fracture is ConchoidalWalter Schumann, ConchoidalWalter Schumann and Gemstones of the world (2001) More from other references.
Alexandrite Vs Jet Luster
A primary knowledge about Alexandrite vs Jet 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. Jet, on other hand, exhibits Waxy luster.