Origin
Canada, Pakistan
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Color
Reddish, Greenish, White, Red, Yellow, Green, Grey, Blue, Brown, Colorless, gray, orange
Blue, Green, Brownish, Greenish, Colorless, gray
For which Rashi?
Virgo, Capricorn
-
Element of Planets
Earth
-
Specific Gravity
2.93-2.96
3.20-3.26
Fracture
Subconchoidal, Conchoidal
Splintery
Cleavage
Distinct on {010}, imperfect {110} and {011}
{010} perfect
Mohs Hardness
3.5-4
6-7.5
Chemical Composition
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Luster
Vitreous, Resinous
Vitreous, Subadamantine, Silky
Pleochroism
StrongArthur Thomas
Colourless to pale brown to yellow
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.525-1.686
1.653-1.685
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.155
0.020-0.022
Clarity
Transparent
Transparent
Neurological
Promotes focus and concentration
-
Cardiovascular
Supports heart health
-
Psychology
Stability
Creativity
Healing
Emotional healing
Emotional healing
Qualities Associated
Centering
Creativity
Aragonite Vs Sillimanite Fracture
Fracture is an important parameter when you compare Aragonite and Sillimanite Physical Properties. It is necessary to understand the significance of these properties, before you compare Aragonite 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 Aragonite is Subconchoidal and Conchoidal. Sillimanite fracture is Splintery.
Aragonite Vs Sillimanite Luster
A primary knowledge about Aragonite 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. Aragonite exhibits Vitreous and Resinous luster. Sillimanite, on other hand, exhibits Vitreous, Subadamantine and Silky luster.