Here's the base colour used, L.A.Girl Color Addict polish in Idol. It's a greyish blue with subtle golden shimmer.
So flakies polishes like this one I used, China Glaze Luxe and Lush from the Hunger Games Collection, two coats of it should be enough to create enough golden chunky sparkle. It's so much prettier in reality, the camera seems to not be able to perfectly capture the sparkles.
Stay tuned for more nail challenge inspired nail art and don't forget to check out my challenge buddies.