Origin
USA, Madagascar, India, Sri Lanka, Burma, Australia, Italy, Brazil
Mexico, USA, Canada, Madagascar, Spain, Russia, Sri Lanka, India, Burma, Origins: Mexico
Color
Blue, Green, Brownish, Greenish, Colorless, gray
Yellow, Green, Blue, White, Red, Colorless, Violet, pink, Brown
For which Rashi?
-
Gemini
Element of Planets
-
Earth
Deities
-
Jupiter/Neptune
Specific Gravity
3.20-3.26
3.16-3.23
Fracture
Splintery
Conchoidal, Uneven, Conchoidal to uneven
Cleavage
{010} perfect
[0001] indistinct, [1010] indistinct
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Luster
Vitreous, Subadamantine, Silky
Vitreous
Pleochroism
Colourless to pale brown to yellow
Blue stones – strong
Transparency
Transparent, Translucent
-
Refractive Index
1.653-1.685
1.628-1.651
Crystal System
Orthorhombic
Hexagonal
Birefringence
0.020-0.022
0.002-0.008
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
-
Enhances communication and mental clarity
Cardiovascular
-
Enhances intuition and psychic abilities
Reproductive
-
Supports reproductive health
Digestive
-
Supports digestive health
Psychology
Creativity
Motivation
Healing
Emotional healing
Emotional healing
Qualities Associated
Creativity
Manifestation
Sillimanite Vs Apatite Fracture
Fracture is an important parameter when you compare Sillimanite and Apatite Physical Properties. It is necessary to understand the significance of these properties, before you compare Sillimanite Vs Apatite 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. Apatite fracture is Conchoidal, Uneven and Conchoidal to uneven.
Sillimanite Vs Apatite Luster
A primary knowledge about Sillimanite vs Apatite 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. Apatite, on other hand, exhibits Vitreous luster.