As I was making room in my Helmer, I grabbed Zoya Feifei, a metallic blue/grey with green and gold shimmer. I don't even recall how old this is, but it's an older polish for sure.
I started with ella + mila Cover Your Bases ridge filling base coat, 3 coats of polish to be safe, and finished with Zoya Glossy Seal. This formula was a little watery but it got opaque eventually.
This is quite unique but I do think I'm going to pass it on to someone else.