Turquoise was always my most favorite stones and beads. The very first beads I ever bought were some gnarly old treated turquoise back in the late 1960's. I still have them, but have never taken a picture.

Here is some that I had recently though, including some very neat antique dark colored Tibetan sourced beads that were most likely from costume items and some southwestern slice type beads. Used to be able to find some really good turquoise at the Rodeway Inn in Tucson, but its been awhile since I was there.