Linda Bennett (aka the archi-ninja) has developed the DIY Concrete House Ring, what she describes as "an elegant, audacious piece of jewelry. A hand casted concrete and resin composite is molded within a sterling silver, satin finish inner and outer piece."
Bennett is seeking funding for the project via Kickstarter, where you can learn more about the design and how it works. Some of those materials are shown here, including the video pitch above (my favorite is the animated gif with the little people, at the bottom of this post).
Since the ring is DIY – meaning you make your own ring with the 16 specially made pieces – each one is unique. The various combinations of shapes, sizes, pigments and smoothness means you craft the ring just the way you like it.
It's like a custom home – on your hand!