Get an emerald stone » with astrological benefits and premium quality. Buy the natural panna stone » with lab certification at the best price. Emerald is a popular precious gemstone and is known as hara Panna stone in Hindi due to its green colour. Natural Emerald Stone » belongs to the corundum family. Emerald Gemstone is ruled by planet Mercury, which bestows intelligence and communication.Emerald is also the Birthstone of May and provides good fortune and fame to the wearer.