Origin
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
USA, Switzerland, Tanzania, Madagascar, Russia, Sri Lanka
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Colorless, Yellow, pink, Red
Specific Gravity
3.05-3.21
2.90-2.98
Fracture
Uneven, Subconchoidal, Splintery
Conchoidal, ConchoidalWalter Schumann
Cleavage
Good on {110}, poor on {100}
Distinct on {11 2 0}, imperfect on {10 1 1}
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Greasy
Vitreous
Pleochroism
strongly trichroic
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
Transparency
Transparent, Translucent
-
Refractive Index
1.627-1.650
1.650-1.695
Crystal System
Orthorhombic
Trigonal
Birefringence
0.009-0.010
0.016
Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Excellent
Psychology
Perception
Clarity
Healing
Physical healing
Emotional healing
Qualities Associated
Self-Realization
Spiritual Activation
Andalusite Vs Phenakite Fracture
Fracture is an important parameter when you compare Andalusite and Phenakite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Phenakite 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. Phenakite fracture is Conchoidal and ConchoidalWalter Schumann.
Andalusite Vs Phenakite Luster
A primary knowledge about Andalusite vs Phenakite 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. Phenakite, on other hand, exhibits Vitreous luster.