I just had to get this out of my system. As soon as I saw these designs (specifically Garnet) I just had to make 8bit versions.
Each sprite uses colors from the NES's palette, only has 3 colors, and are 16x32 pixels (except Steven who's 16x16) like on an NES.
Garnet was super easy because her square shapes, and limited palette made her perfect for 8bit. Amethyst was a little trickier, but still got it done. Pearl was the hardest. Not only does she have a ton of colors, but she's so thin it was difficult to get her to look right. And then Steven was done very quickly to complete the cast.