Parasurama avatar is the sixth avatar of lord Vishnu that appear in Treta Yuga. Parsu means axe, Parsuramana avatar gives moral to the whole world that we must always respect the words of one's father. He was the last son of Jamadakni rishi and Renuka Devi and has named Ramana.
Lord Shiva gave him a weapon, called parasu, thus Ramana become Parasuraman.
Prasurama killed the King Kartavirya, who had stolen the Holy cow Kamdhenu, which could fulfill all the desires. Parsurama had determined to eliminate all the Kshatriyas who were sadist and torturing common men.
The worshiper of this Shaligram gets immense courage and a strong will to fight against all odds that emerges out to be a winner ultimately. This generates lots of confidence to the beholder and he is determined to achieve success in all his endeavors. Also the worshiper gets all his wishes fulfilled. He gets immense protection and wealth.