In astrology, "Panna" typically refers to the green gemstone known as "emerald." Emeralds are associated with the zodiac sign of Taurus and Gemini.

They are believed to bring several astrological benefits, including improved communication, enhanced intelligence, and a positive impact on relationships.

However, the effects of gemstones like emerald can vary based on an individual's birth chart and the specific placement of planets at the time of their birth