Panna is also known as emerald. The color ranges from pure green to greenish blue. These gemstones are formed when chromium, vanadium and iron are present in the mineral beryl. These are mostly found in Columbia, Zambia, Brazil and Zimbabwe. Emeralds from Zambia are considered the best for astrological use. The stone is associated with planet Mercury (Buddha). This planet is associated with wisdom and intelligence. If the mercury is strong, it ensures sharp memory and clarity of thoughts. Strong mercury also enhances strong public speaking skills. It also helps to succeed in the field of business, accounting, public relation and social media. Emeralds should be worn only on Wednesday. It can be made in silver or gold metals and should be worn in the middle finger.
Dip the ring in Gangajal or fresh milk and for 10 min before wearing. While wearing the stone, wearer have to chant this mantra 11 times:
'ॐ ब्रां ब्रीं ब्रौं स: बुधाय नम:'।
NOTE: DO NOT WEAR THE STONE DURING RAHUKAAL