Here is an image of a piece of African blue chalcedony in the rough, this is a very nice piece and is naturally this color. I have made beads from this material and they come out quite nice. If it weren't for a hurting back from an accident a few days ago I would scrounge a bead, I know Joyce has one so perhaps if she has time she will post an image.

Natural chalcedony comes in many colors it is just not that common, I have some true purple out in the studio that is amazing,if I get over there later today I will take an image of it and post it.

All my best .......... Danny