Origin
Brazil, Colombia, Southern and central Africa
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Color
Greenish, Blue, Colorless, White, Green
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Specific Gravity
3.08-3.12
3.05-3.21
Fracture
ConchoidalWalter Schumann
Uneven, Subconchoidal, Splintery
Cleavage
{010} Perfect
Good on {110}, poor on {100}
Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Vitreous
Vitreous, Greasy
Pleochroism
Weak: colorless-(greenish) yellow
strongly trichroic
Transparency
-
Transparent, Translucent
Refractive Index
1.650-1.677
1.627-1.650
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
Orthorhombic
Birefringence
0.019-0.025
0.009-0.010
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Good
Excellent
Psychology
Harmony
Perception
Healing
Emotional healing
Physical healing
Qualities Associated
Communication
Self-Realization
Euclase Vs Andalusite Fracture
Fracture is an important parameter when you compare Euclase and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Euclase Vs Andalusite 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 Euclase is ConchoidalWalter Schumann. Andalusite fracture is Uneven, Subconchoidal and Splintery.
Euclase Vs Andalusite Luster
A primary knowledge about Euclase vs Andalusite 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. Euclase exhibits Vitreous luster. Andalusite, on other hand, exhibits Vitreous and Greasy luster.