La Oreste Agnini Company, Chicago, IL -  è stata fondata nel 1921 da Oreste Agnini. Emigrò negli Stati Uniti dall' Italia nel 1903. La società ha acquisito il marchio ORA alla fine degli anni 1940, un nome  era una combinazione di co-fondatori della società (Oreste Agnini e Ralph Singer). La società è stata la prima operazione di fabbricazione di gioielli nella città di Chicago. Tutte le pietre utilizzate nella produzione dei loro gioielli erano di altissima qualità made in Cecoslovacchia e acquistato nel Rhode Island. L'azienda ha prodotto costume jewelry di splendida fine qualità. Oggi rara da trovare e molto apprezzata dai collezionisti. L'azienda ha cessato la sua attività nel 1952

Eisenberg

Eisenberg Jewelry, founded in the 1930s by Jonas Eisenberg, is a renowned American costume jewelry brand celebrated for its high-quality craftsmanship and distinctive designs. Initially part of a fashion company, Eisenberg focused on jewelry to complement its clothing line, which later became its primary business. Known for using Austrian crystals, rhinestones, and intricate metalwork, Eisenberg pieces are often bold, elegant, and timeless. Popular during Hollywood's golden era, the brand's creations remain highly collectible. Marked with signatures like "Eisenberg Original," "Eisenberg Ice," or "Eisenberg Sterling," its vintage designs exemplify the artistry and glamour of mid-20th-century costume jewelry. Eisenberg Jewelry is considered among the finest costume jewelry ever made.

Pell Known for high quality costume jewelry that looks like the real thing.

Pell was introduced in 1941 as a family run company featuring rhinestone jewelry that was often pave set, rhodium plated and at times defined with splashes of colored stones
Reminiscent of the belle epoch period at the turn of the century and revisited in the '40s and into the '50s, the set's classic design continues to be a favorite of collectors and aficionados. Pell pieces are uncommon and examples in excellent vintage condition, rarely found.