@david pierce wrote:
The FALCON TOOL COMPANY located in Cleveland Ohio sells polishing supplies for the die and mold industries. They offer hundreds of different types, sizes and geometries of stones including Degussit and Pure Polycrystaline Ruby. They also sell diamond paste in different grits which will enable you to put a mirror finish on steel. They are on the internet and their phone number is 1-800-362-9106.
Excellent source. Thanks!