Verdelite Vs Andalusite
Origin
Afghanistan, Brazil, Mozambique, Sri Lanka, USA
Spain, Brazil, USA, Sri Lanka, Burma, Origins: Spain, Burma. Discovered in Andalusia (Spain)
Color
Green, Brown
Brown, pink, Violet, Yellow, Green, White, gray, Colorless, Red
Specific Gravity
2.90-3.40
3.05-3.21
Fracture
Conchoidal
Uneven, Subconchoidal, Splintery
Cleavage
Indiscernible
Good on {110}, poor on {100}
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
-
Vitreous, Greasy
Pleochroism
Strong: dark green yellow
strongly trichroic
Transparency
Transparent, Translucent
Transparent, Translucent
Refractive Index
1.614-1.666
1.627-1.650
Crystal System
-
Orthorhombic
Birefringence
0.014-0.040
0.009-0.010
Clarity
Transparent
Transparent
Neurological
-
Enhances mental clarity and focus
Cardiovascular
Supports heart health
Supports heart health
Respiratory
Good
Excellent
Psychology
Compassion
Perception
Healing
Emotional healing
Physical healing
Qualities Associated
Compassion
Self-Realization
Verdelite Vs Andalusite Fracture
Fracture is an important parameter when you compare Verdelite and Andalusite Physical Properties. It is necessary to understand the significance of these properties, before you compare Verdelite 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 Verdelite is Conchoidal. Andalusite fracture is Uneven, Subconchoidal and Splintery.
Verdelite Vs Andalusite Luster
A primary knowledge about Verdelite 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. Andalusite, on other hand, exhibits Vitreous and Greasy luster.