Harvey Dent was a district attorney and friend of Bruce Wayne who was prosecuting Sal Maroni when the mob boss threw acid on the left side of his face. The resulting scarring caused Harvey Dent to become the supervillain Two-Face, where he develops a split personality.
Yellow Jasper is ideal for activating the Solar Plexus Chakra, the energy distribution center and the chakra of relationships. This chakra is located between the ribcage and navel, and controls the immune and digestive systems.