I'm organizing several years' worth of purchases from a number of Traders, and coming up with lots of types I can't figure out.

Both strands are from reliable Traders who say they are not African-made, but they look too new to be European, unless late period Murano. They do resemble the more usual tabular Murano bead, but are cruder. The rounds have a crazed, scuffed surface over black core, and break easily. The flat-ends have a blue core and show no wear.