The Khanda is the double-edged sword which forms the axis for the Sikh symbol - also called the 'Khanda' or sometimes the symbol 'Adi Shakti'. This variation is curved at the end to bring more speed to the blade, wearing this around the neck will bring speed to the mind and  sensitivity to the vibrational energies of the carved crystal handle.  Each one is unique with different engravings on the blade.