Jerome Grossbardt and Larry Asch, two jewelers whose families had been intertwined in the jewelry business for 200 years co-founded a manufacturing company based in New York City. Together their firm focused on building pieces using a mosaic pattern where pieces of each gemstone fit into a puzzle creating a unique inlay pattern. The inlaid these stones in sterling silver, 14 karat and 18 karat gold. The gemstones that were incorporated were black onyx, red coral, red jasper, banded malachite, lapis lazuli, sugilite, turquoise, and opal. White mother-of-pearl was also used when topped with enamel to protect its surface. All of the designs were original and copyrighted. The business was very protective of their inlaid jewelry style designs, and at times defended their rights in court. In addition to Asch Grossbardt, Jerome Grossbardt was the co-founder of Honora Pearls, a company that Jerome named after his wife, Honora "Honey" Grossbardt. Honora Pearls' co-founder was Stanley Schechter. Jerome's son, Eric, joined the business in 1986 after selling for Honora Pearls for nine years. In 2000, after the passing of his father and the firm's co-owner, Larry Asch, he became the sole owner in 2001. Jerome Grossbardt retired to Boca Raton, Florida. He passed away on September 30, 2012.