blowing my own trumpet---with your permission-
it may have been my research that brought this name into popularity for necklaces- because when i researched for the talk i gave to the New York bead society in 1990-something on bead jewellery fashions, i was able to consult the then already 100-year-old mail order Liberty of London Christmas gift catalogues that they published, originals of which were held in the V&A art library. this was before the internet-( they were on microfiche-) they advertised many items of bead jewellery among other exotic things.

in my first book, "Beads!" and my second one, "the Bead Jewellery book" i illustrated such necklaces and also gave examples with how-to instructions. in my recent 4th book on p.6 i even show some lovely green lampwork+foil Venetian beads with a Liberty price ticket saying "1½ d each".

i don't call the long tasselled necklaces "Sautoirs" because sautoirs are worn diagonally.