Finding Gold in a Dream

Hello, respected Rabbi.. This week (on Shabbat) is the yahrzeit of my father's father.. My father dreamed of his father last week and here is the dream: My father received a gold ring that looked like a precious stone from his father.. After some time, my father was sitting at the table with his brothers and he noticed that the ring his father had given him was not on his finger, but rather another ring that also looked like a gold ring.. He searches the place and does not find the ring.. My father looks on the floor next to him and there he finds many other gold rings and he gathers them in his hand, but they are not the same rings that his father gave him. I ask the Rabbi to interpret the dream for us because my father is troubled.. Thank you in advance.