Quote Originally Posted by ChayesFSS View Post
Dave, thanks for the information, any guesses as to what the grit might or might not be.
Assuming those 2 are coticules, an exact grit cannot be put on them. But generally they are said to perform around the 8000 range. It really depends if you use them with slurry or with water. The backside (dark blue side) is probably BBW as I mentioned, and that is somewhere in the 4000 range. Those are complete ballparks since they are natural stones, i.e. they vary, but those 2 coticules look VERY nice. If I were you I would lap those coticules and try them out! My advice is to search for any thread/post of Bart's. Here's our resident coticule expert.

As for the other stones...I'm not much help there.....Sorry.