I got these stones in Flagstaff, AZ, but I really didn't pay attention to the names of the rocks. I just liked the look and shape of them. I needed to make sure they had a flat bottom so I could solder them to a metal ring band. I'm back in the studio, they're soldered on to the bands, put a patina on them, just need to clean and polish. I tried them on and I love love love them.