SHD,

Thanks for the thoughts and photos. While I have no idea where the stone was quarried, it was purchased and shipped from Portland, Oregon. (Might be regional?) And yes, I'll definitely bring this stone to our next scotch tasting.

I visited the link, but I'm not sold on it being any of those type stones. But I could be wrong. Often am.

(aaron--I'll snap some well-lighted close-up photos tomorrow morning.)

Regards,
Chris