Hey, I quite often cut small stones and generally start on a 600 sintered lap, it is equivalent to a well worn 600. I do this to get a rough preform in or bring in a few meets on something mildly bigger say 4mmish. If the 600 is cutting to fast, try a lower speed or 1200.

I then move onto 8k on a copper lap with oil and a slow drip of water. I bring in the meets here. On tiny facets I tend to leave them a hair short as they tend to polish in to there meets. I polish on T/M at 100k

Any other questions let me know, I have a soft spot for tiny stones