Vivianite Vs Alexandrite
Origin
Southern and central Africa
Russia, Brazil, Tanzania, Madagascar, Zambia, Sri Lanka, Burma, India, Origins: Russia
Color
Blue, Green, Colorless
Green
For which Rashi?
-
Scorpio
Element of Planets
-
Earth
Specific Gravity
2.64-2.70
3.69-3.81
Cleavage
{010} Perfect
1,1 ; 3,2.
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
BeAl 2 O 4
Luster
Vitreous, Pearly
Vitreous
Pleochroism
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue
-
Transparency
Transparent
Transparent, Transparent to nearly opaque
Refractive Index
1.560-1.640
1.739-1.770
Optic Character
-
Biaxial/+
Crystal System
-
Orthorhombic
Birefringence
0.054-0.075
0.007-0.010
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Aids in grounding and protection
Respiratory
Good
Excellent
Reproductive
-
Supports reproductive health
Psychology
Hope
Transformation
Healing
Emotional healing
Emotional healing
Qualities Associated
Transformation
Transformation
Vivianite Vs Alexandrite Fracture
Fracture is an important parameter when you compare Vivianite and Alexandrite Physical Properties. It is necessary to understand the significance of these properties, before you compare Vivianite 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.
Vivianite Vs Alexandrite Luster
A primary knowledge about Vivianite 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. Vivianite exhibits Vitreous and Pearly luster. Alexandrite, on other hand, exhibits Vitreous luster.