Was at a Gun Show the other day and a vendor had a number of Spydercos with polished stone grips; obviously more show than go; think they had the stone on one side only but they were very nice; believe he had a Byrd or two decked out the same way. He said they were the work of Santa Fe Stone (not certain that is correct name) but said he would contact them and they would build grips the way he wanted them. I didn't think the prices were too out of line but they weren't really my cup of tea. I would guess this was not unusual but it was interesting.