Origin
USA, Mexico, Brazil, Switzerland, Sri Lanka, Burma, Madagascar, Color: colorless, light yellow, light pink, Hardness: 7, Refractive index: 1.63 1.64, Density: 2.98 3.03, Chemical composition: Ca(B2Si2O8), Crystal structure: orthorhombic, Origins: USA, Mexico, Brazil, Germany, Switzerland, Sri Lanka, Burma, Madagascar, Japan. Colorless danburites are common, with light pink or yellowish stones being more rare and expensive. Only eye clean pieces are valuable.
  
Canada, Russia, Kenya, Russia, Brazil, Russia, Brazil, Russia, Brazil, Russia, Brazil, Russia, Brazil, Russia, Brazil, Russia, Norway, Brazil
  
Color
Yellow, Brown, Colorless, White, gray, Brownish, Yellow
  
Green, Greenish, Black, Green, Greenish, Black, Green, Greenish, Black, Reddish, Brown, Black, Green, Greenish, Black, Reddish, Brown, Black, Green, Greenish, Black, Reddish, Brown, Black
  
Streak
White
  
Yellow, Yellowish-grey, gray
  
For which Rashi?
Not Available
  
Pisces
  
Planet
Not Available
  
Not Available
  
Element of Planets
Not Available
  
Not Available
  
How to Wear?
  
  
Finger
Not Available
  
Not Available
  
Ring Metal
Not Available
  
Not Available
  
Energy
Not Available
  
Not Available
  
Deities
Not Available
  
Not Noted
  
Not to wear with
Not Available
  
Not Available
  
Powers
Not Available
  
Healing
  
Birthstone
  
  
Planetary
Not Available
  
Not Available
  
Talisman
Not Available
  
Not Available
  
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.97-3.03
  
3.50-3.60
  
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
  
Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
  
Cleavage
{001} Poor
  
Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}
  
Mohs Hardness
7
  
6
  
Chemical Composition
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.
  
Luster
Vitreous, Greasy
  
Vitreous, Resinous
  
Pleochroism
Weak: pale yellow yellow
  
X = emerald green
  
Dispersion
Not Available
  
Transparency
Gemmological Tables (2004) More from other references
  
Gemmological Tables (2004) More from other references
  
Refractive Index
1.627-1.639
  
1.720-1.778
  
Optic Character
Biaxial/+
  
Not Available
  
Crystal System
Orthorhombic
  
monoclinic
  
Birefringence
0.006
  
0.037-0.061
  
Clarity
TransparentUlrich Henn and Claudio C. Milisenda
  
Gemmological Tables (2004) More from other references
  
Physical
  
  
Neurological
Not Available
  
Not Available
  
Cardiovascular
Not Available
  
Not Available
  
Respiratory
Not Available
  
Not Available
  
Reproductive
Not Available
  
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Digestive
Not Available
  
Not Available
  
Psychology
Not Available
  
Not Available
  
Healing
Not Available
  
Not Available
  
Qualities Associated
Not Available
  
Not Available
  
Danburite Vs Aegirine Fracture
Fracture is an important parameter when you compare Danburite and Aegirine Physical Properties. It is necessary to understand the significance of these properties, before you compare Danburite Vs Aegirine 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 Danburite is Brittle, Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Uneven and Uneven. Aegirine fracture is Brittle, Brittle, Brittle, Metallic, Metallic, Metallic and Uneven.