Emerald is velvety green in color, The most coveted emerald is that which is radiant and smooth and has neither cracks nor dots.  Emerald harmonizes and strengthens the positive influences of budha or mercury. It is very beneficial for gemini and virgo to opt for emerald. Wash the ring with fresh milk and holy water and offer dhoop. Then, while chanting mantra “Om Bharan Bhreen Bhroon Saah Budhaya Namah:” wear the ring in the little finger of the right hand on a wednesday.