Emerald /  पन्ना / Panna 

Also called as Emerald, Panna stone is one of the most attractive gemstones and counted among the Big Three gemstones of the world namely Rubies, sapphires and emeralds. Pann stone is widely used in gem therapy and it is considered the gemstone corresponding to planet Mercury. 

Panna stone therefore stores the energies of Mercury and supplies the wearers in the required measures from time to time. If Mecury is placed favorably in your horoscope, you can tremendously benefit from wearing Panna stone in a ring or talisman.