Chalcedony Vs Alexandrite
Origin
Zimbabwe
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
Violet, White, gray, Blue, Brown, Black
Green
Streak
White
Not Available
For which Rashi?
Cancer, Sagittarius, Cancer, Sagittarius, Cancer, Sagittarius
Scorpio
Element of Planets
Water
Earth
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Projective, Receptive
Deities
Goddess Whope
Not Available
Not to wear with
Not Available
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
3.69-3.81
Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
Not Available
Cleavage
Absent
1,1 ; 3,2.
Chemical Composition
SiO2
BeAl 2 O 4
Pleochroism
AbsentWalter Schumann
Not Available
Dispersion
None
Not Available
Transparency
Translucent, Translucent to opaque
Transparent, Transparent to nearly opaque
Refractive Index
1.530-1.543
1.739-1.770
Optic Character
Not Available
Biaxial/+
Crystal System
Trigonal
Orthorhombic
Birefringence
0.003-0.009
0.007-0.010
Clarity
Translucent
Transparent
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
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Qualities Associated
Not Available
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Chalcedony Vs Alexandrite Fracture
Fracture is an important parameter when you compare Chalcedony and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Chalcedony 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 Chalcedony is Conchoidal, Conchoidal, Splintery, Splintery, Uneven, Uneven and UnevenWalter Schumann.
Chalcedony Vs Alexandrite Luster
A primary knowledge about Chalcedony 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. Chalcedony exhibits Vitreous luster. Alexandrite, on other hand, exhibits Vitreous luster.