sequin(sparkling spangle used for decoration of ornate clothing:) noun [UK: ˈsiː.kwɪn] [US: ˈsiː.ˌkwɪn]
spangle [spangles](small, flat piece of sparkling metallic or metal-like material with a hole which is sewn on to a garment, etc., for decoration) noun [UK: ˈspæŋ.ɡl̩] [US: ˈspæŋ.ɡl̩]