Yum yum yum.
Concrete has always had a special place in our hearts (even if it is an environmental nightmare).
So these rings from Studio 22 Design in Taiwan got our hearts beating just a little bit faster. They're not on sale yet, but tip top design site Designboom (where we saw these) is promising to remedy that sometime soon.
There are more pictures on Studio 22's blog, though it's all in Taiwanese (or possibly Mandarin - damn our lack of Oriental language knowledge...), but if you click the yellow highlighted text under the photograph of the rings, it takes you to a full gallery.