Prasiolite Vs Alexandrite
Origin
Canada
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
Streak
Not Available
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For which Rashi?
Libra, Sagittarius, Taurus
Scorpio
Element of Planets
Water
Earth
Finger
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Ring Metal
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Energy
Receptive
Projective, Receptive
Deities
Goddess
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Not to wear with
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Powers
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Love
Planetary
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Talisman
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Tenacity
Brittle
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Solubility
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Durability
Not Available
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Specific Gravity
2.65
3.69-3.81
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Not Available
Chemical Composition
SiO 2Ulrich Henn and Claudio C.
BeAl 2 O 4
Pleochroism
Very weak: light green pale greenWalter Schumann
Not Available
Transparency
Transparent, Translucent
Transparent, Transparent to nearly opaque
Refractive Index
1.544-1.553
1.739-1.770
Optic Character
Not Available
Biaxial/+
Crystal System
Trigonal
Orthorhombic
Birefringence
0.009
0.007-0.010
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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Prasiolite Vs Alexandrite Fracture
Fracture is an important parameter when you compare Prasiolite and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Prasiolite Vs Alexandrite 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 Prasiolite is Conchoidal, ConchoidalWalter Schumann and Gemstones of the world (2001).
Prasiolite Vs Alexandrite Luster
A primary knowledge about Prasiolite vs Alexandrite 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. Prasiolite exhibits Vitreous luster. Alexandrite, on other hand, exhibits Vitreous luster.