There was a time when the Cowboy and the Sailor knots were as clever as I got when tying my scarves. Then I found scarf rings which would add a pop of color and/or some stability to the knot. Thanks to those more talented than I'll ever be, there are a number of knotting tutorials online. Many use scarf rings as an integral part of keeping pleats folded or forcing an end to a specific direction.
I don't speak much French beyond names of foods (croissant, baguette, filet mignon) but it doesn't take translation software to figure this classic design is modeled after the chains that tie an anchor to a ship.
The trusty chaine d'ancre comes in a variety of metals, a rainbow of lacquer finishes, even buffalo horn. It does more than keep a scarf from sliding off one's shoulders. It can add either a complementary or contrasting color to a simple knot, or enable weaving one end of a scarf under or around the other. It can also be used as a pendant but unless you are using buffalo horn would be too heavy for use as earrings.