4th chakra, Heart. PRASEM is a green variety of quartz from Seriphos, Greece. Top quality, deep colour, perfect terminations. Brings security in love. It allows access to the mystery we hold deepest in our hearts, thereby healing and activating our highest hearts desire. A powerful crystal of psychic insight, prophecy, and abundance. It assists in the healing of eyesight and speech impediments. Prasem crystals offer a tranquilizing affect on the heart and mind, inspiring calm, clear assurance.