
Until a few weeks ago, this subject held up a fence post in my back yard. Then the wind blew. When it stopped blowing, I needed a new fence. Several passes with a diamond blade and a few sledgehammer blows later, this chunk of stuff came out. It wasn't big enough to have much choice in composition, but I thought the colors and patterns were pretty enough to show anyway.
--Rik
24 mm wide. Sawed flat, sanded smooth on 400-grit paper, flooded with water to photograph.