Origin
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Italy
Color
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Green, gray, Brown, Black
Streak
White
Greenish, White
Specific Gravity
3.05-3.21
2.58-2.80
Fracture
Uneven, Subconchoidal, Splintery
Conchoidal
Cleavage
Good on {110}, poor on {100}
{001} Good
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Luster
Vitreous, Greasy
Waxy, Silky, Resinous, Greasy
Pleochroism
strongly trichroic
pale greenish yellow
Transparency
Transparent, Translucent
Translucent
Refractive Index
1.627-1.650
1.530-1.575
Crystal System
Orthorhombic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
Birefringence
0.009-0.010
-9999
Clarity
Transparent
Translucent
Neurological
Enhances mental clarity and focus
Supports neurological health
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Excellent
Good
Psychology
Perception
Harmony
Healing
Physical healing
Emotional healing
Qualities Associated
Self-Realization
Emotional Healing
Andalusite Vs Antigorite Fracture
Fracture is an important parameter when you compare Andalusite and Antigorite Physical Properties. It is necessary to understand the significance of these properties, before you compare Andalusite Vs Antigorite 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. Antigorite fracture is Conchoidal.
Andalusite Vs Antigorite Luster
A primary knowledge about Andalusite vs Antigorite 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. Antigorite, on other hand, exhibits Waxy, Silky, Resinous and Greasy luster.