Origin
Ethiopia, Afghanistan, China, Australia, Origins: Brazil (major source); also found in USA, Germany, France, UK, Finland, Norway, Sweden, Namibia, Zaire, China and Australia.
Southern and central Africa
Color
Brown, Green, White, Colorless, Yellow, Blue, gray, pink, Greenish
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
Specific Gravity
2.98-3.10
3.03-3.18
Fracture
Sub-Conchoidal, Irregular/uneven, Uneven, Conchoidal
Uneven, Irregular, Conchoidal
Cleavage
[100] Perfect, [110] Good, [011] Distinct
{???} Indistinct
Chemical Composition
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Luster
Vitreous, Pearly
Vitreous
Pleochroism
weak to none
Very strong: pale yellow colorless
Transparency
-
Transparent
Refractive Index
1.578-1.646
1.614-1.666
Optic Character
Biaxial/+
-
Crystal System
Triclinic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.020-0.030
0.014-0.032
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Transparent
Neurological
Enhances mental clarity and focus
-
Reproductive
Supports reproductive health
-
Psychology
Peace
Self-acceptance
Healing
Emotional healing
Emotional healing
Qualities Associated
Peace
Self-Exploration
Amblygonite Vs Dravite Fracture
Fracture is an important parameter when you compare Amblygonite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Amblygonite Vs Dravite 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. Dravite fracture is Uneven, Irregular and Conchoidal.
Amblygonite Vs Dravite Luster
A primary knowledge about Amblygonite vs Dravite 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. Dravite, on other hand, exhibits Vitreous luster.