Origin
Canada, Russia, Kenya, Brazil, Norway
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
Green, Greenish, Black, Reddish, Brown
Blue, Green, Brownish, Greenish, Colorless, gray
Streak
Yellow, Yellowish-grey, gray
White
For which Rashi?
Pisces
-
Specific Gravity
3.50-3.60
3.20-3.26
Fracture
Uneven
Splintery
Cleavage
Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}
{010} perfect
Chemical Composition
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Resinous
Vitreous, Subadamantine, Silky
Pleochroism
Emerald green
Colourless to pale brown to yellow
Transparency
-
Transparent, Translucent
Refractive Index
1.720-1.778
1.653-1.685
Crystal System
monoclinic
Orthorhombic
Birefringence
0.037-0.061
0.020-0.022
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Respiratory
Supports heart health
Good
Reproductive
Supports heart health
-
Digestive
Supports heart health
-
Psychology
Protection
Creativity
Healing
Physical healing
Emotional healing
Qualities Associated
Protection
Creativity
Aegirine Vs Sillimanite Fracture
Fracture is an important parameter when you compare Aegirine and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Aegirine Vs Sillimanite 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 Aegirine is Uneven. Sillimanite fracture is Splintery.
Aegirine Vs Sillimanite Luster
A primary knowledge about Aegirine vs Sillimanite 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. Aegirine exhibits Vitreous and Resinous luster. Sillimanite, on other hand, exhibits Vitreous, Subadamantine and Silky luster.