Mahamrityunjaya mantra is one of the Two Great mantras explained in the Vedas. The other being the Gayatri. It is basically chanted when one is having physical and mental ailments. It also helps in bringing about peace and tranquility to the mind. Daityaguru Shukraacharya (The preceptor of the Asuras used the Amrit Sanjeevni Vidya) to bring life to the demons who had been slayed in war using this mantra The locket has yantra image on one side and deity image of the other side. The yantra would be blessed and energized. Design: Made in pure copper with gold plating. Dimensions: 30 mm (diameter) x 2 mm (thickness)