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