Could be a sander or a router.
A cut with smooth edges is called an incision.
Not all crystals have smooth edges. The only crystals that I think have smooth edges are water worn ones. So your answer is no.
it is cleavage
I'm not sure what you mean by smooth raised edges, but I would suggest you take it to a coin dealer and have it appraised.
Smooth
sand paper
smooth
A belt sander is the name for a machine used for removing rough edges.
Hey All you need to do is use some waterproof abrasive paper (also know as wet and dry paper) and in essence sand down the edges equally to get a nice finish. now the technique to the best finish is to use the wet and dry paper on the edges when it is dry until the edge feels smooth but maybe has a few more scratches you can't feel much but can see. Once you've done that, get the paper wet and repeat the sanding movements till the edge is very smooth. If you have a buffing or polishing machine you can use that on the edges too but look up the safety online as I'm not very well acquainted with the machine. Sincerely James
Because if there are no rough edges then there is less resistance.
Erosion after millions of years have caused the jagged edges to smooth out. Hi
Erosion after millions of years have caused the jagged edges to smooth out. Hi