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