Origin
Ethiopia, Afghanistan, China, Australia, Origins: Brazil (major source); also found in USA, Germany, France, UK, Finland, Norway, Sweden, Namibia, Zaire, China and Australia.
Italy, Russia
Color
Brown, Green, White, Colorless, Yellow, Blue, gray, pink, Greenish
Colorless, Green, Black, Brown, Red, Greenish, Yellow, gray
Specific Gravity
2.98-3.10
3.70-4.10
Fracture
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Conchoidal, Uneven
Cleavage
[100] Perfect, [110] Good, [011] Distinct
none
Chemical Composition
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Luster
Vitreous, Pearly
Adamantine, Resinous
Pleochroism
weak to none
-
Transparency
-
Transparent
Refractive Index
1.578-1.646
1.88-1.94
Optic Character
Biaxial/+
-
Crystal System
Triclinic
cubic
Birefringence
0.020-0.030
0.057
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Cardiovascular
-
Supports heart health
Respiratory
Excellent
Good
Reproductive
Supports reproductive health
-
Psychology
Peace
Positivity
Healing
Emotional healing
Physical healing
Qualities Associated
Peace
Empowerment
Amblygonite Vs Andradite Fracture
Fracture is an important parameter when you compare Amblygonite and Andradite Physical Properties. It is necessary to understand the significance of these properties, before you compare Amblygonite Vs Andradite 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 Amblygonite is Sub-Conchoidal, Irregular/uneven, Uneven and Conchoidal. Andradite fracture is Conchoidal and Uneven.
Amblygonite Vs Andradite Luster
A primary knowledge about Amblygonite vs Andradite 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. Amblygonite exhibits Vitreous and Pearly luster. Andradite, on other hand, exhibits Adamantine and Resinous luster.