Arfvedsonite Vs Alexandrite
Origin
Canada, Russia
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
Black, Green, Black, Green, Black, Green, gray, Black, Green, gray
Green
Streak
Not Available, Not Available, gray, Green
Not Available
For which Rashi?
Not Available
Scorpio
Planet
Not Available
Venus
Element of Planets
Not Available
Earth
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Projective, Receptive
Deities
Not Available
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Not to wear with
Not Available
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Powers
Not Available
Love
Planetary
Not Available
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Talisman
Not Available
Not Available
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.3-3.5
3.69-3.81
Fracture
Uneven, Brittle, Metallic, Brittle, Metallic
Not Available
Cleavage
Perfect on [110]
1,1 ; 3,2.
Chemical Composition
NaNa2(Fe++4Fe+++)Si8O22(OH)2
BeAl 2 O 4
Pleochroism
Strong: Blue-greens
Not Available
Dispersion
Not Available
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Transparency
Not Available
Transparent, Transparent to nearly opaque
Refractive Index
1.652-1.699
1.739-1.770
Optic Character
Not Available
Biaxial/+
Crystal System
monoclinic
Orthorhombic
Birefringence
Not Available
0.007-0.010
Clarity
Not Available
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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Arfvedsonite Vs Alexandrite Fracture
Fracture is an important parameter when you compare Arfvedsonite and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Arfvedsonite 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 Arfvedsonite is Brittle, Brittle, Metallic, Metallic and Uneven.
Arfvedsonite Vs Alexandrite Luster
A primary knowledge about Arfvedsonite 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. Arfvedsonite exhibits Vitreous luster. Alexandrite, on other hand, exhibits Vitreous luster.