15 mukhi /PanchadashaMukhiRudraksha(Fifteen faces/15 mukhi )VERY RARE
Ruling Deity: Pra Shiva 
Shakti: 15 mukhi/Panchadasha Mukhi is the embodiment of Lord Pashupatinath, the incarnation of Lord Shiva as the protector of all living beings of the world. It is also blessed by many gods, especially goddess Mahalaxmi and one can experience growth in wealth and rise above poverty. Itincreases mental strength and fights off varied phobias.  
Suggested for: Improving instinct, Intellectual and Lateral thinking
Mantra:Om Rudra PanchadashaVaktrasya Om NamahShivaya
Start day: Any Day

Shodasha Mukhi Rudraksha(Sixteen faces /16 mukhi )VERY RARE
Ruling Deity: Pra Ram and Mahakal
Shakti: 16 mukhi/ShodashaMukhiis theembodiment of Lord Mahamrityunjaya that protects one from misfortune and adversities. It can battle with death, give strength, courageand grant long life. 
Suggested for: Mental well being, tuberculosis, leprosy and lung ailments.
Mantra:Om TryambakamYajamaheSugandhim Pushti-VardhanamUrvarukamivaBandhananMrityorMukshiyaMamritat
Start day: Monday

Saptadasha Mukhi Rudraksha (Seventeen faces/17 mukhi )VERY RARE
Ruling Deity: Pra Vishwakarma and Goddess Katyayani
Shakti: 17 mukhi/SaptadashaMukhiis the embodiment of Lord Vishwakarma, known as the architect of this world. It helps with professional success, productivity and creativity. It doubles one's wealth and prosperity.This Rudraksha also represents planet Shani (Saturn) and protects the wearer from its wrath and hardships. 
Suggested for: Awakened kundalini, marital bliss, memory loss and body disorders