Thank you very much for your inquiry. Crocus cloth is an iron abrasive cloth, used as a polishing agent. It is similar to sandpaper but much finer. You should be able to find it in painting/sandpaper area of any major hardware store.
Q. What is crocus cloth and where can I buy it?
I was told to buy "crocus cloth" to polish dichroic glass pendants. I am unable to find it locally, but I live in a small town. What is crocus cloth? Many thanks.