This item is a lot of 48 quartz beads from the Southern Sahara (Niger, Chad, Mali, Algeria). Most of these are Neolithic (8,000 BC -> 4,000 BC) and are shaped like discs with diameters ranging between 9 and 18 mm. Almost all have bow-drilled conical holes. The smaller diameter beads are thicker and shaped more like barrells. You can see single examples of these prehistoric beads at africantradebeads.com. As singles, these typically would sell at prices between $5 & $10. Therefore, this lot would have a retail value of between $250 & $400. There are enough beads in this lot to make a handsome necklace.