Emerald (Panna) ringEmerald or “ PANNA” as it is commonly is a gemstone for The Planet “ MERCURY”. The planet Mercury is regarded as the prince among the assembly of nine planets.The emerald has long been the symbol of hope. The emerald is said to bring the wearer reason and wisdom . For some the emerald acts as an Antidote for Persons with Emotional Disturbances and A troubled mind. If Mercury is afflicted by malefic planets and placed in weak position in ascendant one is likely to face disputes, litigation, and loss through theft, loss due to fraud, cheating and forgery.