OLLY: No, I mean I think AMBER was the wrong clue... as in, yes, it is a fossil resin, but that clue AND answer shouldn't have been there. They were both inserted into a crossword where that entry should not have been there, and don't allow other correct entries to fit (also #18 is circled to the left). Instead, the clue should have been like "Oyster's prize" or something along those lines. If you look at the other crossword link Sledge gives... for Locke's crossword puzzle, that is how GILGAMESH is portrayed... it is Enkinu's friend, but it doesn't fit with the other clues that are up there. Unfortunately, I didn't wait for the second hint....
BTW, I think solving the entire crossword did have some benefits (and I just like crosswords in general, I guess). It was not until I got 7 down... STAMP OF APPROVAL... that I was able to see that LETUP was the correct answer, and I had the A for PEARL. And I wasn't able to get STAMP OF APPROVAL until I got a bunch of the lower clues right. What I ended up doing was printing out the picture image, whiting out the top clues Sledge already had, and starting over from scratch. It was much easier from that point on...
PS: I think the answer to 8 down "Hugo's" is EURO. I'm not sure why this is, but it makes sense with everything else on the crossword. I was curious if someone else can explain the term "Hugo's Euro".