Dumortierite Vs Dravite
Origin
Southern and central Africa
Southern and central Africa
Color
Blue, Violet, Brown, White, Greenish, pink
White, Colorless, Blue, Red, Green, Yellow, Violet, Black
For which Rashi?
Leo, Sagittarius
-
Element of Planets
Water
-
Specific Gravity
3.26-3.41
3.03-3.18
Fracture
Fibrous, ConchoidalWalter Schumann
Uneven, Irregular, Conchoidal
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
{???} Indistinct
Mohs Hardness
7-8.5
7-7.5
Chemical Composition
AlAl6O3BSi3O18
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Very strong: pale yellow colorless
Transparency
Translucent, Translucent to opaque
Transparent
Refractive Index
1.669-1.723
1.614-1.666
Crystal System
Orthorhombic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.011-0.037
0.014-0.032
Clarity
Translucent
Transparent
Neurological
Enhances mental clarity and focus
-
Psychology
Patience
Self-acceptance
Healing
Emotional healing
Emotional healing
Qualities Associated
Patience
Self-Exploration
Dumortierite Vs Dravite Fracture
Fracture is an important parameter when you compare Dumortierite and Dravite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite 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 Dumortierite is Fibrous and ConchoidalWalter Schumann. Dravite fracture is Uneven, Irregular and Conchoidal.
Dumortierite Vs Dravite Luster
A primary knowledge about Dumortierite 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. Dumortierite exhibits Vitreous luster. Dravite, on other hand, exhibits Vitreous luster.