I attended the 2017 CIETA conference, held at The Hermitage.
Very interesting discussions of textiles as symbols of power. The Hermitage treated us to a special exhibit of their collections ... including a display featuring garments worn by Peter the Great. His military uniform included a sprang sash.
The curator told me that the sash originally was tricolore: red, white, and blue. The fiber is silk with silver threads worked in. You can tell it is sprang, because one side features an S twist to the stitches, the other side features Z twist. There is a line at the shoulder where the S and Z meet.