To be clear, the Pokemon connection did not occur to me; but when pja mentioned it, I remembered that, yeah, not only are they both Pokemon titles, but they were released at the same time. I like DIAMOND simply because they're both precious stones, and it's a word we must be expected to guess. The others are all associations you might miss. (Though I've always thought bed isn't a collective noun as in "bed of clams", but just refers to where they're found.) Still, I can get on board with DIAMOND/JAM.
So, since we all mentioned it:
Point to DIAMOND
So, since we all mentioned it:
Point to DIAMOND