Women's Bib Necklace. Coastal Chic Ocean-Inspired Three Layer Bib Choker Necklace Featuring Acrylic Turquoise Round Flat Disc Beads with Turquoise and Brown Marbled Acrylic Coral Like Pieces. Coral Pieces Measure 2" x 1.25". Layers Measure 16" to 20". Gold Metal Lobster Clasp Closure.