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