collarette
/kɒləˈrɛt/ or /kɑːləˈrɛt/Definitions
1. noun
A type of ornamental or decorative strip, band, or border, especially one with a series of raised or beaded edges, often used to adorn the neck or edges of a garment, such as a cloak, cloak-like garment, or a piece of jewelry.
“The designer added a delicate collarette to the edge of the cloak to give it an elegant finish.”