It's a medium-grit (4-5K) natural Scottish hone, faster (in my humble opinion) than the Tam and the Belgian blue. This makes it a superb stone for removing scratches left from bevel creation, but it's still nowhere near fast enough to actually set a bevel.

Joe Chandler is the only honemeister (actually the only other person here period) I know who uses it. He's honed hundreds of razors so his opinion's not so humble; maybe he'll come in here and say whether my description of the Dalmore is accurate.

I think the Dalmore is also a very beautiful stone, dark blue-gray with thick swirls. If I ever get around to replacing my damn digital camera I'll post a picture.