Satchmo and Django-tagging

[Josue Balandrano]

Hi, I'm building a webstore. I am going to sell Jewelry here, so the thing is that I have my main categories like "earrings, necklaces" and so on. But I need some attributes like "Material, color, stone, size". But these can't be Options because not every product is available in all colors or all sizes and I don't fell comfortable with attributes because I need a way to list all this attributes and be able to filter the result as per attribute selected.
So I was thinking about installing Django-tagging, it seemes this is more or less what I need. The only problem is if I am going to be able to have a tree like distribution for my tagging? and do I have to modify the product models in order to implement the tagging?
Thank you in advance.