Andalusite Vs Apophyllite
Origin
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
India, Canada, Brazil
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Colorless, Reddish, White, pink, Green, Yellow, Violet, Blue, Brown
Specific Gravity
3.05-3.21
2.30-2.50
Fracture
Uneven, Subconchoidal, Splintery
Uneven
Cleavage
Good on {110}, poor on {100}
Perfect on (001)
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
Luster
Vitreous, Greasy
Vitreous, Pearly
Pleochroism
strongly trichroic
Dichroic (colorless)
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.627-1.650
1.530-1.543
Optic Character
-
Uniaxial/-
Crystal System
Orthorhombic
tetragonal
Birefringence
0.009-0.010
0.000-0.003
Clarity
Transparent
Transparent
Neurological
Enhances mental clarity and focus
Aids in mental clarity and intuition
Cardiovascular
Supports heart health
-
Respiratory
Excellent
Good
Psychology
Perception
Spiritual Connection
Healing
Physical healing
Emotional healing
Qualities Associated
Self-Realization
Connection to Spiritual Guides
Andalusite Vs Apophyllite Fracture
Fracture is an important parameter when you compare Andalusite and Apophyllite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Apophyllite 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. Apophyllite fracture is Uneven.
Andalusite Vs Apophyllite Luster
A primary knowledge about Andalusite vs Apophyllite 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. Apophyllite, on other hand, exhibits Vitreous and Pearly luster.