Could you please tell me the significance of leaving a stone on the grave? I remember at the end of Schindler's list when some of the surviving Schindler Jews, their children and grandchildren, placed stones on his grave and have always wondered about its meaning.
Here's some explanation of the tradition of leaving stones at a grave.. not sure if it is accurate, but it is interesting :)
http://www.templesanjose.org/JudaismInfo/time/Life_Cycle/pebbles.htm