I thoroughly dislike this design. I understand the whole 'forever permanent engagement ring' idea and I do enjoy piercings but I don't think this ring would be very practical, I am pretty sure it would get snagged on all sorts of things. The permanency of the ring would be very unpleasant if you were being mugged :)
I think these rings are incredibly beautiful. They are made from stainless steel and concrete and i love that they are quite chunky heavy. The stainless steel on the inside of the rings give them a bit of elegance and charm. i really like the shape of the rings as well as the innovative use of materials.