Why do Jews place stones on grave stones | placing stones on grave stones | place pebbles on grave stones | place small stone on marker | place a small stone at the gravesite | visiting the gravesite | tradition of placing stones | leaving stones at someone’s grave | bereavement in Judaisim | Headstone Matzevah unveiling of tombstone Jewish gravesite tradition bereavement yartzeit mourning rituals mourning traditions honoring the deceased cemetery traditions visiting the cemetery shiva. condolences Jewish mourning Holy City of Jerusalem honoring the departed