I knew I had tried some polish from my "untried" list, and I finally remembered what it was: Azure.
Lustre Shine color, and I'm pretty sure it's discontinued (although it still shows up on SH's website, so maybe not) but I can't say I recommend it in either case, even though it's really a glorious color. That part doesn't show up so well in the picture. It's sort of a dark cornflower blue - it has a touch of purple in it. Really a beautiful color, but streaky and didn't wear well, either. I hate it when that happens.