2006 dime

[clueless]

I have a 2006 dime with a defect, although it doesn't have to do with the stamp, it has to do with the edge. Usually the edge of a dime has ridges and a copper center can be seen. My dime has no ridges and is solid copper, so from the side it looks just like a penny. I don't know what kind of error this is or how common. I can take better pics if you think it's worth your time...

[diamond]

It's not an error. The coin was rolled and squeezed outside the mint to create a smooth, convex edge and an exaggerated false rim.