Opal Vs Dumortierite
Origin
Ethiopia
Southern and central Africa
Color
Yellow, White, Red, Brown, Blue
Blue, Violet, Brown, White, Greenish, pink
For which Rashi?
Cancer, Libra, Scorpio
Leo, Sagittarius
Element of Planets
Earth, Air, Water
Water
Powers
Astral Projection, Psychicism
Healing
Tenacity
BrittleWalter Schumann
-
Solubility
hot salt water
-
Specific Gravity
1.98-2.25
3.26-3.41
Fracture
Conchoidal
Fibrous, ConchoidalWalter Schumann
Cleavage
None
Distinct on {100}, poor on {110}; parting on {001}
Mohs Hardness
5-6.5
7-8.5
Chemical Composition
SiO2 · nH2O
AlAl6O3BSi3O18
Luster
Vitreous, Pearly
Vitreous
Pleochroism
None
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Transparency
Transparent, Translucent, Transparent to translucent
Translucent, Translucent to opaque
Refractive Index
1.37-1.52
1.669-1.723
Crystal System
Trigonal
Orthorhombic
Birefringence
-9999
0.011-0.037
Clarity
Transparent
Translucent
Neurological
Enhances mental clarity and focus
Enhances mental clarity and focus
Psychology
Creativity
Patience
Healing
Emotional healing
Emotional healing
Qualities Associated
Creativity
Patience
Opal Vs Dumortierite Fracture
Fracture is an important parameter when you compare Opal and Dumortierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Opal 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 Opal is Conchoidal. Dumortierite fracture is Fibrous and ConchoidalWalter Schumann.
Opal Vs Dumortierite Luster
A primary knowledge about Opal 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. Opal exhibits Vitreous and Pearly luster. Dumortierite, on other hand, exhibits Vitreous luster.