Link to the latest (raw) ChemCam images : http://mars.jpl.nasa.gov/msl/multimedia/raw/?s=62&camera...
According to the article it's "In the foreground, near the bottom of the image." I do see something near the bottom, halfway in the gap between the rover, that looks grey.... maybe metallic.
This was taken from http://www.universetoday.com/97774/curiosity-finds-something...
[1] http://www.reddit.com/r/science/comments/116q6s/curiosity_fi...