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
Canada
Color
Green
Reddish, White, Violet, gray, Black, Reddish, White, Violet, gray, Black
Streak
Not Available
Black
For which Rashi?
Scorpio
Not Available
Planet
Venus
Not Available
Element of Planets
Earth
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Projective, Receptive
Not Available
Deities
Not Available
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Not to wear with
Not Available
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Powers
Love
Not Available
Planetary
Not Available
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Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.69-3.81
6.3
Fracture
Not Available
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
Cleavage
1,1 ; 3,2.
{100} Good, {010} Good, {001} Good
Chemical Composition
BeAl 2 O 4
CoAsSAnthony et al , Handbook of mineralogy (2001)
Luster
Vitreous
Not Available
Pleochroism
Not Available
Very weak
Dispersion
Not Available
Not Available
Transparency
Transparent, Transparent to nearly opaque
Gems
Refractive Index
1.739-1.770
Not Available
Optic Character
Biaxial/+
Not Available
Crystal System
Orthorhombic
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: P ca21
Birefringence
0.007-0.010
Not Available
Neurological
Not Available
Not Available
Cardiovascular
Not Available
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Respiratory
Not Available
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Reproductive
Not Available
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Digestive
Not Available
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Psychology
Not Available
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Healing
Not Available
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Qualities Associated
Not Available
Not Available
Alexandrite Vs Cobaltite Fracture
Fracture is an important parameter when you compare Alexandrite and Cobaltite Physical Properties. It is necessary to understand the significance of these properties, before you compare Alexandrite Vs Cobaltite 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. Cobaltite fracture is Brittle, Handbook of mineralogy (2001) More from other references, Handbook of mineralogy (2001) More from other references, Metallic, UnevenAnthony et al and UnevenAnthony et al.
Alexandrite Vs Cobaltite Luster
A primary knowledge about Alexandrite vs Cobaltite 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.