Geometric Black Onyx Mid-Century White Akoya Saltwater Cultured Pearl Necklace- 14K Yellow Gold 31.50"This is a unique retro Japanese saltwater cultured akoya pearl and jet black onyx beaded necklace. It features pearls with good luster and rosy pink overtones. They measure 6. 00mm. They are paired with large 8. 25mm black onyx beads and small gold spacers. No clasp, and measures 31. 50 inch. It slips right over the head. From mid century. All pearls are truly vintage and have only been lightly cleaned and restrung.