Although originally released back in 2007 as part of the Winter SKI Collection from China Glaze, I only recently picked up a bottle of Black Diamond for myself. I was attracted to the fact that it is vampy, but with a twist. It doesn't come through particularly well in the picture, but this polish has a pearly luster that moves it from pitch black into pearly gray. It is definitely deeper in color than my other favorite gray, SpaRitual Mood. Black Diamond is a nice change from the typical purple and deep blue-based vamp shades that we've been seeing and I have really been enjoying wearing it. Plus, I've gotten a ton of compliments, which is always nice.