Another round of interesting photo for this contest. Our theme this week is on something that is essentially one single element. So please vote for the photo that best represents our theme. 1. DaveC426913 - Fe 2. Daz - Si 3. ZapperZ - Nb 4. dlgoff - W 5. Borek - C 6. Andy Resnick - Hg 7. epenguin - Rh Contest thread Zz.