Origin
Southern and central Africa, violet, blue, violet, blue
Canada, Southern and central Africa, Italy, Australia, India
Color
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
Violet, Brownish, Yellow, Reddish, Pale pink
For which Rashi?
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
Virgo
Planet
Saturn
Mercury, Jupiter
Element of Planets
Water
Water
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Receptive
Receptive
Not to wear with
Not Available
Not Available
Powers
Healing
Not Available
Planetary
Not Available
All
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
2.69-2.79
Fracture
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Distinct on {100}, poor on {110}; parting on {001}
Poor on {0001}
Mohs Hardness
7-8.5
5.5-6.5
Chemical Composition
AlAl6O3BSi3O18
KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pleochroism
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Weak
Dispersion
None
Not Available
Transparency
Translucent, Translucent to opaque
Translucent
Refractive Index
1.669-1.723
1.607-1.612
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic
Hexagonal
Birefringence
0.011-0.037
0.003
Clarity
Translucent
Translucent
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 Sugilite Fracture
Fracture is an important parameter when you compare Dumortierite and Sugilite Physical Properties. It is necessary to understand the significance of these properties, before you compare Dumortierite Vs Sugilite 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. Sugilite fracture is ConchoidalArthur Thomas, ConchoidalArthur Thomas, Gemstones (2009) and Gemstones (2009).
Dumortierite Vs Sugilite Luster
A primary knowledge about Dumortierite vs Sugilite 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. Sugilite, on other hand, exhibits Vitreous luster.