Really enjoyed this grid. A little annoyed that I didn't get the point for saying that Steven et al. are 'The Crystal Gems' so maybe add that as a correct option? Overall really good.

Loved the misdirect of having the gems along with "ruby" which is actually in its own category for being red. Annoyed that I didn't get "Black __" when I got the red things, and I went through so many possibilities thinking they could be kinds of gun (sheep gun / sheep rifle, a rifle, a widow(maker?) and panther (I knew it was a tank which was close) or maybe things that can be used as nouns and verbs (widow and to widow, rifle and to rifle, admittedly this falls apart with panther and sheep).

Black Pearl.