it is on top of tabletop mountian after u beat the krall guarding it

i kill the boss but i can't find the diamond mineral

After you kill the boss search around the spot where it was, thats where I found it.

beat the krall at the top of table top mountain then dig for it where the giant krall
stood


p.s iv completed the game and im only 9!!!!

the others are a lie use a spectrobe that has corona propetie then go to the middle trust
me i beat the game

omg i was stuck for years literly years thx so much guy that says to search with a corona
baby spectrobe