Origin
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
USA, Mexico, Brazil, Switzerland, Sri Lanka, Burma, Madagascar, Origins: USA, Germany, Japan
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Yellow, Brown, Colorless, White, gray, Brownish
Specific Gravity
3.05-3.21
2.97-3.03
Fracture
Uneven, Subconchoidal, Splintery
Uneven, ConchoidalWalter Schumann, Conchoidal
Cleavage
Good on {110}, poor on {100}
{001} Poor
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Greasy
Vitreous, Greasy
Pleochroism
strongly trichroic
Weak: pale yellow yellow
Transparency
Transparent, Translucent
-
Refractive Index
1.627-1.650
1.627-1.639
Optic Character
-
Biaxial/+
Crystal System
Orthorhombic
Orthorhombic
Birefringence
0.009-0.010
0.006
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Good
Psychology
Perception
Spiritual Awareness
Healing
Physical healing
Emotional healing
Qualities Associated
Self-Realization
Spiritual Awakening
Andalusite Vs Danburite Fracture
Fracture is an important parameter when you compare Andalusite and Danburite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Danburite 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. Danburite fracture is Uneven, ConchoidalWalter Schumann and Conchoidal.
Andalusite Vs Danburite Luster
A primary knowledge about Andalusite vs Danburite 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. Danburite, on other hand, exhibits Vitreous and Greasy luster.