Origin
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Switzerland, Australia, Brazil
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Yellow, Colorless, White, Brownish, Reddish
Specific Gravity
3.05-3.21
5.9-6.3
Fracture
Uneven, Subconchoidal, Splintery
Conchoidal, Uneven
Cleavage
Good on {110}, poor on {100}
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Luster
Vitreous, Greasy
Vitreous, Adamantine
Pleochroism
strongly trichroic
Definite dichoric in yellow (yellow to orange-brown)
Transparency
Transparent, Translucent
Translucent, Transparent
Refractive Index
1.627-1.650
1.918-1.936
Crystal System
Orthorhombic
tetragonal
Birefringence
0.009-0.010
0.016
Clarity
Transparent
Translucent
Neurological
Enhances mental clarity and focus
-
Cardiovascular
Supports heart health
-
Psychology
Perception
Awareness
Healing
Physical healing
Physical healing
Qualities Associated
Self-Realization
Balance & Clarity
Andalusite Vs Scheelite Fracture
Fracture is an important parameter when you compare Andalusite and Scheelite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Scheelite 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. Scheelite fracture is Conchoidal and Uneven.
Andalusite Vs Scheelite Luster
A primary knowledge about Andalusite vs Scheelite 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. Scheelite, on other hand, exhibits Vitreous and Adamantine luster.