Dip the stone in holy water or honey before wearing it to wash away all the bad energy. This step is essential because it fills the stone with positive energy. Burn five incense sticks while wearing them and ask God (the sun) to bless you abundantly.
To activate the ruby stone, recite "Om Hrim Sum Suryay Namah'' 108 times. This is Surya Dev's mantra. Please take note that if you currently wear a red coral, you may wear the ruby gemstone as a pendant or as a ring on your left hand's ring finger.