I didn't have time to do full swatches of all of them and I couldn't pick just one, so I did skittles.
Oh my. I wish these came in full sizes. I used three coats of each, which is fine, since I really like the colors. Smoky Quartz is a deep gray creme that stays grey in most lighting conditions. I don't own anything quite like it. Pink Ruby is the most conventional of the bunch, a gorgeous ruby red creme. Emerald is a deep green shimmer; I feel like I've seen this before but can't quite recall where—it's silver shimmer instead of gold, so not the Glam Goth green or Project Runway (which I've only seen in photos), but maybe a Sally Hansen. I'll have to look. Amethyst was my favorite, an almost metallic smoky purple shimmer. I plan to wear that as a full mani soon, and am pondering breaking my "don't buy backups rule" for it, since it's such a small bottle.