Origin
Not Available, Southern and central Africa
Southern and central Africa, violet, blue, violet, blue
Color
Colorless, Colorless, Yellow
Blue, Violet, Brown, White, Blue, Brown, Violet, Greenish, pink
For which Rashi?
Not Available
Leo, Sagittarius, Leo, Sagittarius, Leo, Sagittarius
Planet
Not Available
Saturn
Element of Planets
Not Available
Water
Finger
Not Available
Not Available
Ring Metal
Not Available
Not Available
Energy
Not Available
Receptive
Deities
Not Available
Isis
Not to wear with
Not Available
Not Available
Powers
Not Available
Healing
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
2.59-2.60
3.26-3.41
Fracture
Brittle, Metallic, Brittle, Metallic
Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
{001} Perfect, {110} Distinct, {101} Distinct
Distinct on {100}, poor on {110}; parting on {001}
Chemical Composition
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
AlAl6O3BSi3O18
Pleochroism
none.
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
Dispersion
Not Available
None
Transparency
TransparentAnthony et al, Handbook of mineralogy (2001)
Translucent, Translucent to opaque
Refractive Index
1.583-1.614
1.669-1.723
Optic Character
Not Available
Not Available
Crystal System
Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21
Orthorhombic
Birefringence
Not Available
0.011-0.037
Clarity
TransparentAnthony et al
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
Bertrandite Vs Dumortierite Fracture
Fracture is an important parameter when you compare Bertrandite and Dumortierite Physical Properties. It is necessary to understand the significance of these properties, before you compare Bertrandite 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 Bertrandite is Brittle, Brittle, Metallic and Metallic. Dumortierite fracture is ConchoidalWalter Schumann, Fibrous and Gemstones of the world (2001) More from other references.
Bertrandite Vs Dumortierite Luster
A primary knowledge about Bertrandite 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. Bertrandite exhibits Vitreous luster. Dumortierite, on other hand, exhibits Vitreous luster.