Onyx (Semi Precious Stones)

ONYX Green for Budha / Red for Mangal & Surya / Black for Sani & Rahu.

  • Gem-Group : Chalcedony.
  • Crystal Structure : Trigonal.
  • Composition : Silicon Dioxide , SiO2.
  • Hardness : 7
  • Availability : World wide.
  • Specific Gravity : 2.61
  • Refractive Index : 1.53-1.54
  • Double Refraction :  0.004
  • Lustre : Vitreous
  • Metal : Silver.
  • Process : Process followed as that of the planet for which it is used.