14kt yellow gold Vintage hinged bangle by Asch-Grossbardt with inlaid, turquoise, pink coral, mother-of-pearl & 0.14ct diamonds. Asch Grossbardt is a renowned American brand and a leading manufacturer of high-quality, distinctive inlaid jewelry. The company was founded by Jerome Grossbardt and Larry Asch, and its pieces are celebrated for their unique mosaic designs using hand-cut semi-precious gemstones.