I know what marble cake is : http://memorabledays-x3.blogspot.com/2010/05/marble-cake.html but what are marble nails? It seems so "popular" now-a-days... So I searched it up and found some videos on Youtube. Check this out:
Notice: This girl' nails are way too long (and its not fake)! Its almost scary >.<"
Anywayssss,, so you have to put a bit nail polish in a glass of water and you can combine your own colors and add your own creation to it~
I think its very creative ! It looks fun, but I think it will be such a mess if I'm going to do this, just like in the video >.<" I believe that you are going to spend a lot of money to buy nail polish removers xD cuz you will need a lot to remove the rest of the nail polish on your fingers =/.