Simpsonite Vs Alexandrite
Origin
Australia
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
Color
Colorless, White, Brownish, Yellow, Brown
Green
Streak
White
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For which Rashi?
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Scorpio
Planet
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Venus
Element of Planets
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Earth
Finger
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Ring Metal
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Energy
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Projective, Receptive
Deities
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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
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Solubility
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Durability
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Specific Gravity
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3.69-3.81
Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
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Chemical Composition
Al 4(Ta,Nb) 3(O,OH,F) 14Ulrich Henn and Claudio C.
BeAl 2 O 4
Luster
Adamantine
Vitreous
Pleochroism
NilArthur Thomas
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Dispersion
Not Available
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Transparency
Gemmological Tables (2004) More from other references
Transparent, Transparent to nearly opaque
Refractive Index
1.994-2.040
1.739-1.770
Optic Character
Not Available
Biaxial/+
Crystal System
Not Available
Orthorhombic
Birefringence
0.046
0.007-0.010
Clarity
Gemmological Tables (2004) More from other references
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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Simpsonite Vs Alexandrite Fracture
Fracture is an important parameter when you compare Simpsonite and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Simpsonite 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 Simpsonite is Brittle, Conchoidal, ConchoidalAnthony et al, ConchoidalAnthony et al, Handbook of mineralogy (2001) and Handbook of mineralogy (2001).
Simpsonite Vs Alexandrite Luster
A primary knowledge about Simpsonite 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. Simpsonite exhibits Adamantine luster. Alexandrite, on other hand, exhibits Vitreous luster.