The One Mukhi Rudraksha is the symbol of Godhood, Supreme Truth and Attainment of Eternity. The One Mukhi Rudraksha is itself Lord Shankar and it is the main among all Rudrakshas of all faces. It is ruled by the Sun and enlightens the Super Consciousness. It brings the power of Dharana to the wearer meaning the power to concentrate the mind on an object. The wearer of One Mukhi Rudraksha gets his mental structure changed and he begins to feel renunciation from the worldly affairs and naturally inclines towards GOD. His mind begins to concentrate on the Supreme Element that is Partattva Dharana cha jayate Tatprakashnam thus the discoverers of Aatma Tattva must wear One Mukhi Rudraksha. 

This is the best of all Rudrakshas. Peace and pleasure abide in the house where One Mukhi Rudraksha is worshipped. The person who worships it obtains not only all the worldly pleasures during his life span but also remains unaffected by them. One Mukhi Rudraksha is found in two shapes round and the half moon shape. Round Rudraksha is highly praised in our ancients texts but it is very rare and more of a myth . One mukhi Half moon is easily available and found in a family tree of Rudraksha from India and Srilanka. From the point of view of importance there is no difference between them. Therefore it must be real and pure in whatever shape it may be. The cost of One Mukhi Round is more than the half moon shaped Rudraksha. 

Rituals for wearing

One faced Rudraksha should be capped with gold or silver and should be worn round the neck or be placed at the worshipping place, chanting the mantra.  Getting up in the morning the devotee should salute the one faced Rudraksha first, pronouncing mantra.
Day for wearing: Monday