Alexandrite Vs Common Opal
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
Southern and central Africa
Color
Green
White, Colorless, Blue, Red, Green, Yellow, Violet
Streak
Not Available
Not Available
For which Rashi?
Scorpio
Not Available
Planet
Venus
Not Available
Element of Planets
Earth
Not Available
Energy
Projective, Receptive
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Deities
Not Available
Not Available
Not to wear with
Not Available
Not Available
Powers
Love
Not Available
Planetary
Not Available
Not Available
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
1.98-2.50
Fracture
Not Available
Conchoidal, Gemstones of the world (2001)
Cleavage
1,1 ; 3,2.
Not Available
Mohs Hardness
8.5
5.5-6.5
Chemical Composition
BeAl 2 O 4
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Luster
Vitreous
Not Available
Pleochroism
Not Available
AbsentWalter Schumann
Dispersion
Not Available
None
Transparency
Transparent, Transparent to nearly opaque
Translucent
Refractive Index
1.739-1.770
1.37-1.52
Optic Character
Biaxial/+
Not Available
Crystal System
Orthorhombic
Not Available
Birefringence
0.007-0.010
Not Available
Clarity
Transparent
Translucent
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
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
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Alexandrite Vs Common Opal Fracture
Fracture is an important parameter when you compare Alexandrite and Common Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Alexandrite Vs Common Opal 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. Common Opal fracture is Conchoidal and Gemstones of the world (2001).
Alexandrite Vs Common Opal Luster
A primary knowledge about Alexandrite vs Common Opal 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.