Labradorite

 Mohs scale
  6.0 - 6.5
 Specific Gravity
  2.69 - 2.72
 Refractive Index
  1.554 - 1.573
 Crystal system
  Triclinic
 Chemical Composition
  (Ca,Na)[Al(Al,Si)Si2O8]
 Sign of Zodiac (Click on the constellation for more information)
  Sagittarius Scorpio Leo
 Chakra (Click on the chakra for more information)
  Throat Chakra Third Eye Crown Chakra
 Birthstones (Click on the month for more information)
  None
 
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