Origin
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Afghanistan, Brazil, Madagascar, Mozambique, Southern and central Africa, Russia, Sri Lanka
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
White, Colorless, Blue, Red, Green, Yellow, Violet
Specific Gravity
3.05-3.21
3.01-3.06
Fracture
Uneven, Subconchoidal, Splintery
Conchoidal
Cleavage
Good on {110}, poor on {100}
Indiscernible
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Luster
Vitreous, Greasy
-
Pleochroism
strongly trichroic
Strong: dark red pinkish-redHerve Nicolas Lazzarelli
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.627-1.650
1.614-1.666
Crystal System
Orthorhombic
-
Birefringence
0.009-0.010
0.014-0.040
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Respiratory
Excellent
Excellent
Psychology
Perception
Passion
Healing
Physical healing
Emotional healing
Qualities Associated
Self-Realization
Passion
Andalusite Vs Rubellite Fracture
Fracture is an important parameter when you compare Andalusite and Rubellite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Rubellite 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 Andalusite is Uneven, Subconchoidal and Splintery. Rubellite fracture is Conchoidal.
Andalusite Vs Rubellite Luster
A primary knowledge about Andalusite vs Rubellite 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. Andalusite exhibits Vitreous and Greasy luster.