Brass mother of pearl and black enamel choker

Brass with pink Mother-of-Pearl shell hard metal choker necklace with black enamel inlay. Approx. measurements: back opening is 3 inches (straight open line “connecting” metal ends), 4.75 inches wide and 5 inches long. Metal has some give but not very much. It can fit an adult neck (not all sizes) Circa 1970s-80s One black enamel inlay has a small chip. Otherwise in great vintage condition This beauty is truly a unique statement piece!