Origin
Southern and central Africa, violet, blue, violet, blue
Not Available, Southern and central Africa
Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Violet, Black
Streak
White
gray, White, gray, White
For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
Not Available
Planet
Saturn
Not Available
Element of Planets
Water
Not Available
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Not Available
Deities
Isis
Not Available
Not to wear with
Not Available
Not Available
Powers
Healing
Not Available
Planetary
Not Available
Not Available
Talisman
Not Available
Not Available
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.26-3.41
3.17
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Handbook of mineralogy (2001)
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
None
Chemical Composition
AlAl6O3BSi3O18
Na x[Fe2+2(Al,Fe3+ )]Al 6(BO 3) 3Si 6O 18(OH) 4Anthony et al , Handbook of mineralogy (2001)
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Strong: pale lavender dark blueAnthony et al
Dispersion
None
Not Available
Transparency
Translucent, Translucent to opaque
TranslucentAnthony et al, Translucent
Refractive Index
1.669-1.723
Not Available
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
Birefringence
0.011-0.037
Not Available
Clarity
Translucent
TranslucentAnthony et al
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 Foitite Fracture
Fracture is an important parameter when you compare Dumortierite and Foitite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Foitite 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. Foitite fracture is Handbook of mineralogy (2001).
Dumortierite Vs Foitite Luster
A primary knowledge about Dumortierite vs Foitite 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. Foitite, on other hand, exhibits Vitreous luster.