Origin
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Brazil, USA, Madagascar, Sri Lanka, Burma, Thailand, Cambodia, Afghanistan, Russia
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Blue, Violet, Colorless, Red, Green, Brown
For which Rashi?
-
Sagittarius, Scorpio
Specific Gravity
3.05-3.21
3.64-3.66
Fracture
Uneven, Subconchoidal, Splintery
Conchoidal, Uneven
Cleavage
Good on {110}, poor on {100}
None, but may exhibit slight parting
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
MgAl2O4
Luster
Vitreous, Greasy
Vitreous
Pleochroism
strongly trichroic
Absent
Transparency
Transparent, Translucent
Transparent, Translucent, Transparent to translucent
Refractive Index
1.627-1.650
1.73
Crystal System
Orthorhombic
Isometric
Birefringence
0.009-0.010
-9999
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Respiratory
Excellent
Good
Psychology
Perception
Revitalization
Healing
Physical healing
Emotional healing
Qualities Associated
Self-Realization
Vitality
Andalusite Vs Spinel Fracture
Fracture is an important parameter when you compare Andalusite and Spinel Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Spinel 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. Spinel fracture is Conchoidal and Uneven.
Andalusite Vs Spinel Luster
A primary knowledge about Andalusite vs Spinel 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. Spinel, on other hand, exhibits Vitreous luster.