A term coined by GloZell from Youtube (glozell1), meaning a younger girl who is too young to be a gold digger ( a woman who preys on men for their money), and has yet to move up the metal scheme.
GloZell: Okay, so she's trying to pick between Justin Beaver and Sean Kingston? They're like two completely different people... The only thing they have in common is that they're both rich. She's definitely a gold digger , no wait, she's a little young to be a gold digger, so she's an aluminum digger. She'll eventually move up the metal scheme.