Red diamond

is there more that 1 red diamond? i'm not sure what section i'm at but the last thing to find is a red diamond. clue 4 says unearthing something lost in time can take great patience. in my items found there is a box cutter. i read 1 place in here to use the hammer in the center to get red diamnond but i dont think thats it if there's more than 1 red diamond. can someone help???

never mind i got it