These Czech moulded shapes with "exotic" themes (the creamy white ones) from the '20s were made into hundreds of designs nearly always quite long closed loop necklaces the fancy ones interspersed with smaller regular ones in a contrasting colour, and knotted between each bead which gave additional length. Those necklaces finished with a more elaborate moulded pendant at the front, or at least a tassell. My guess is that somebody removed the pendant and then used the remaining feature beads with the reddish amber-like ones to make a necklace strand that should be casually looped or knotted around the neck in the style that began to be popular in the '90s.
However beads threaded close together without knots, however strong the thread, they dont drape well if you want to loop the ends together.
so maybe this necklace wasnt worn much??