Rahu, the Head of the Dragon, is one of the malefic planets in astrology. It has no physical existence but is very powerful in nature.The mesmerizing hessonite stone can come to the rescue of the native and help him ward off the ill effects of malefic Rahu.People engaged in travel business (particularly foreign lands) and gambling may also benefit from this charming gemstone. Before wearing a potent Hessonite gemstone, as it can cause damage if it is not compatible with your horoscope.