Onyx gemstone is formed by deposition of silica in gas cavities in lava, which results in distinctive bands. It is associated with planet Venus. This gemstone contains of black and/or white color. It is believed this stone brings spiritual inspiration, eliminates negative energy, helps reducing stress and makes a person witty. It is also worn to strengthen nails, hair, kidney, nerve, capillary and eye. It is believed to reduce uncontrollable sexual impulses. It is also associated with romance due to the close inner twinning of the layers of black and white in the gemstone. It is worn in the left hand on the little finger.
Dip the ring in Gangajal or fresh milk and for 10 min before wearing. While wearing the stone, wearer have to chant this mantra 11 times:
'ॐ ब्रां ब्रीं ब्रौं स: बुधाय नम:'।
NOTE: DO NOT WEAR THE STONE DURING RAHUKAAL