Anyone know where the brown chest is on fir island?

I need silver too, I got pink before silver.

No you didn't miss anything, maybe you cleared too fast by using the blue swords. I've been stuck with 3 islands and only Rock on one I can harvest. The plus side is I always get pick axes some I cant use the others..

Use the 2nd piggy bank..do one and switch to another island. Wherever it finds a secret treasure use your shovels there on in the second piggie..