Hessonite (Gomedh) is gemstone for Rahu. Rahu in not a planet in solar system but as per jyotish astrology it plays a significant role in deciding a lot of factors related to various other planets in our horoscope. Wearing Hessonite tends to bring down bad effect of Rahu. If you need success during ‘Rahu period’ and want to reduce the negative effects, Hessonite can help. The main source of Hessonite is Sri Lanka Ceylon mines.