Sugilite Vs Vivianite
Origin
Canada, Southern and central Africa, Italy, Australia, India
Southern and central Africa
Color
Violet, Brownish, Yellow, Reddish, Pale pink
Blue, Green, Colorless
Planet
Mercury, Jupiter
-
Element of Planets
Water
-
Specific Gravity
2.69-2.79
2.64-2.70
Cleavage
Poor on {0001}
{010} Perfect
Mohs Hardness
5.5-6.5
-9999
Chemical Composition
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Weak
Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue
Transparency
Translucent
Transparent
Refractive Index
1.607-1.612
1.560-1.640
Crystal System
Hexagonal
-
Birefringence
0.003
0.054-0.075
Clarity
Translucent
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Respiratory
Excellent
Good
Psychology
Spirituality
Hope
Healing
Emotional healing
Emotional healing
Qualities Associated
Spiritual Protection
Transformation
Sugilite Vs Vivianite Fracture
Fracture is an important parameter when you compare Sugilite and Vivianite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sugilite Vs Vivianite 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 Sugilite is Conchoidal.
Sugilite Vs Vivianite Luster
A primary knowledge about Sugilite vs Vivianite 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. Sugilite exhibits Vitreous luster. Vivianite, on other hand, exhibits Vitreous and Pearly luster.