Origin
Sri Lanka, India, Brazil
Ethiopia, Afghanistan, China, Australia, Origins: Brazil (major source); also found in USA, Germany, France, UK, Finland, Norway, Sweden, Namibia, Zaire, China and Australia.
Color
Green, Brown, Colorless, gray, Yellow
Brown, Green, White, Colorless, Yellow, Blue, gray, pink, Greenish
Streak
Brownish, White
White
Specific Gravity
3.55-3.73
2.98-3.10
Fracture
Conchoidal, Uneven
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Cleavage
none
[100] Perfect, [110] Good, [011] Distinct
Chemical Composition
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Luster
Greasy, Vitreous
Vitreous, Pearly
Pleochroism
None
weak to none
Refractive Index
1.730-1.760
1.578-1.646
Optic Character
-
Biaxial/+
Crystal System
cubic
Triclinic
Birefringence
0.020
0.020-0.030
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
TransparentUlrich Henn and Claudio C. Milisenda
Neurological
-
Enhances mental clarity and focus
Reproductive
Helps in digestion and alleviates indigestion
Supports reproductive health
Psychology
Abundance
Peace
Healing
Physical healing
Emotional healing
Qualities Associated
Abundance
Peace
Grossular Vs Amblygonite Fracture
Fracture is an important parameter when you compare Grossular and Amblygonite Physical Properties. It is necessary to understand the significance of these properties, before you compare Grossular Vs Amblygonite 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 Grossular is Conchoidal and Uneven. Amblygonite fracture is Sub-Conchoidal, Irregular/uneven, Uneven and Conchoidal.
Grossular Vs Amblygonite Luster
A primary knowledge about Grossular vs Amblygonite 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. Grossular exhibits Greasy and Vitreous luster. Amblygonite, on other hand, exhibits Vitreous and Pearly luster.