The dark red ones were sold to me as 'cherry amber' in the 1960s.

I restrung them with the mottled orange ones, which came in a choker-length strand (beads connected by wires with small loops at each end, with short chain ending in hook supposed to hook over short chain on the other end that ended in a smaller one of same bead). This was also bought in the 1960s, from the style I think was late 1940s to early 1950s. Must also be plastic.

But I too like the light weight.

Snap