Maybe this will help.
Last year I sold some etched beads very much like yours but smaller.
My beads were not as large as yours and they sold for about $200.oo each.
Yours look larger then mine. I would think the center bead would fetch around $300.oo at the high end but no lower then $200.oo.
The dark ones look like PYU culture beads and these beads sell well also.
I would think the whole package would be $400.oo-$500.oo dollars.
Look on the web at Pumtek man's store on ebay...Check on Garuda.com. Good info and prices.
Anyway...that's my blab on these beads.
see ya at the FORUM