According to Yogis and Astrologers Rudraksha is much influencive in remiving bad effects of the planets. It is known that Gems are used specially in removing the bad effects of palnets........if they are unable to pacify thier evil influence.......it is most advisable to wear Rudraksha described in the following lines........then not only planets are pacified but comfort and and pleasure also come to its wearer and they become favourite to Lord Shiva. Therefore the wearer must know which Rudraksha will be useful to them

It is regarded that the most useful and beneficial is to wear

One faced Rudraksha and twelve faced for the Sun
Two faced Rudraksha and Gauri Shankar for the Moon
Three face and Six face Rudraksha for Mars
Four face and Eight face for Mercury
Five face and Ten face for Jupiter
Thirteen face for Venus
Seven face and Fourteen face for Saturn
Eight face for Dragon Head Rahu
Nine face for Dragon Tail Ketu

It is regarded as the best of ten face Lord Visnu Rudraksha and eleven face Lord Hanuman Rudraksha are worn to pacify the bad effects the nine planets