I recently found the attached necklaces which I think are lovely and seem to be fairly rare and sought after. When doing my research (some of it on eBay, I know, but...) I came across mention of Scottish agate, which seems a possible match for some of these beads.

Then, I remembered seeing "Sulemani" agate mentioned here, and other varieties. My question: is this just a case of 'call it what you will' or is there a definite distinction between the characteristics of the banded agate from different areas? And, I'd also like opinions on the origins of the beads I'm showing. Thanks in advance for any info!

-Mel