An obelisk is in a way an antenna for receiving the energies that circulate around us. It acts as a security when, despite the shields we have already put in place, negative energies are still likely to pass. They are naturally captured by the obelisk. Like all antenna, obelisks are also very good transmitters and are very useful in long-distance caregiving. SYMBOL: Known for its healing powers, amethyst has the ability to attract spiritual energies and to calm restless thoughts.