These glass beads were widespread in barter. The surface is slightly frosted, so that they act like old Indian beads. The hole is about 2.2 mm in diameter, so that they effortlessly on a leather cord can be wound. Size, and the diameter and color may vary slightly from the specified dimensions.
A little tip, before threading the hole a little entgraden with a thin metal file (or Dremel with diamond paper), so you avoid the possibility of string or strip of leather at some point cut, since glass is well known to be very sharp at the edges unpolished manner.
