- Handcrafted, signed and numbered jewelry pieces.
- Unique and esoteric gemstones and phenomenal gems, cut and polished in their own workshop.
- Oscar and Nathan apprenticed with their great-uncle in Kharkov, a believed workmaster for Faberge..
- Oscar & Nathan moved to New York.
- Skilled in platinum work, they were uniquely trained and highly desirable and became known as “The Jewelers’ Jeweler.”
- Oscar went to work for the newly opened Cartier, New York.
- The rest of the Heyman family arrives in New York City.
- Oscar Heyman & Brothers (Oscar, Nathan & Harry) opened at 47 Maiden Lane.
- Supplied high-quality platinum jewelry to the trade.
Jeweler’s Jeweler for:
- Van Cleef & Arpels
- Marcus & Co.
- Tiffany & Co.
- Secured 7 patents including:
- The firm moves to 71 Nassau St and Louis and William join the family business.
- To increase proximity to their jeweler clients they move to 48 W. 40th St.
- The firm begins to buy Columbian emeralds direct from the mine.
- The firm makes a move to 642 Fifth Ave. and Oscar joins a consortium to purchase the Crown of the Andes.
- Oscar Heyman & Bros. begins an affiliation with Van Cleef & Arpels.
- Bombsights and jeweled bearings for the war effort are produced in their workshop.
- In affiliation with the Linde Star Company, they designed the commemorative necklace for the New York World’s Fair.
- Created the necklace for Cartier to highlight the Taylor-Burton Diamond.
- Relocation to 501 Madison Ave.
- Death of Oscar Heyman.
- Oscar Heyman & Bros. remains a family-run operation employing many relatives of the original team.
- c.1934: 58 W. 40th St. New York NY
- c.1943 – c. 1950: 642 Fifth Ave. New York NY