It's mokume gane, Japanese "wood-grained metal" - layers of various alloys of copper, silver and gold, hammered, sanded and oxidized to show off different colors. Cool stuff to work with:)
I use technology in order to hate it more properly.
-- Nam June Paik
cool (Score:2)
the stone is so interesting looking. i like the way you cut it.
Re: (Score:1)