Beautiful Vintage Black Onyx Slab Beaded Statement MCM Necklace 14Kt clasp

This fabulous statement necklace is a genuine vintage piece that has a mid century modern design. It features large slabs in a bib style necklace with round beads. the gold clasp is marked S 14K. The S is most likely the designer mark. I did test the gold and it passed for real 14kt It's cold to the touch which is a sign of real stone and it has a nice weight and feel. See photos for condition and measurements