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