Before wearing the blue courandoum dip it in the unboiled milk with pure ganga water, honey, flowers & pure ghee to get rid of all impurities from the stone.
Chant the holy mantra of shani "Om Pram Preem Paroum Sah Shanye Namah" 108 times. After that wear your blue sapphire ring in the middle finger of either of the hand with positively thoughts.
Blue courandoum birthstone can too be worn by Gemini, Virgo, and Taurus.
Weight:- Minimum 1/10th of the body weight; for example if a person weighing 50 kg, can wear a 5 carat ( 5.50 Ratti ) Neelam Ratna.
Colour:- For best Jyotish or Astrological results light blue color, blue color or dark blue color is recommended.
Metal:- Silver and Panchdhatu (White color metal) is best-suited metal for Blue Courandoum.
Finger:- Middle Finger of either of the hand.
Day and Time:- Saturday Evening between 6:00PM to 9:00PM
Mantra & Chanting Times:- "Om Pram Preem Paroum Sah Shanye Namah" 108 times
Planet:- Saturn (Shani)
Vedic Raashi:- Makar (Capricorn ) & Kumbh (Aquarius)
Western Sun Sign:- Libra (Tula)
Suitable Ascendents:- Gemini (Mithun), Virgo (Kanya), Taurus (Vrish)