Origin
Southern and central Africa, violet, blue, violet, blue
Ethiopia
Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Yellow, White, Red, Brown, Blue
For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
Cancer, Libra, Scorpio, Cancer, Libra, Scorpio, Cancer, Libra, Scorpio
Element of Planets
Water
Earth, Air, Water
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Projective, Receptive
Not to wear with
Not Available
Not Available
Powers
Healing
Astral Projection, Psychicism
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
BrittleWalter Schumann
Solubility
Not Available
hot salt water
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
1.98-2.25
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
None
Mohs Hardness
7-8.5
5-6.5
Chemical Composition
AlAl6O3BSi3O18
SiO2 · nH2O
Luster
Vitreous
Vitreous, Pearly
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
None
Transparency
Translucent, Translucent to opaque
Transparent, Translucent, Transparent to translucent
Refractive Index
1.669-1.723
1.37-1.52
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal
Birefringence
0.011-0.037
Not Available
Clarity
Translucent
Transparent
Neurological
Not Available
Not Available
Cardiovascular
Not Available
Not Available
Respiratory
Not Available
Not Available
Reproductive
Not Available
Not Available
Digestive
Not Available
Not Available
Psychology
Not Available
Not Available
Healing
Not Available
Not Available
Qualities Associated
Not Available
Not Available
Dumortierite Vs Opal Fracture
Fracture is an important parameter when you compare Dumortierite and Opal Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Opal 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 ConchoidalWalter Schumann, Fibrous and Gemstones of the world (2001) More from other references. Opal fracture is Brittle, Conchoidal, Conchoidal and Gemstones of the world (2001) More from other references.
Dumortierite Vs Opal Luster
A primary knowledge about Dumortierite vs Opal 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. Opal, on other hand, exhibits Pearly and Vitreous luster.