The DeYoung Collection

J. & S.S. DeYoung, Inc. is a 6th generation family business dating back to 1835 when Simon DeYoung, a Dutch diamond cutter, emigrated to Boston.  Simon’s son Jacob worked at the Morse Diamond cutting factory in Boston, and then later went into jewelry trading with his son Sydney.  Sydney became a prominent dealer from the 1920’s onward and developed an expertise for important and historical jewels.  His nephew Joseph Samuel joined him after World War II and together they further expanded business in both domestic and international markets.  Sydney also donated a vivid pink diamond and rare red diamond to the Smithsonian Institution in Washington, D.C., so they could be enjoyed by the general public. 

Joseph Samuel was considered a leader in the industry and was a member of several trade organizations, as well as serving on the GIA Board of Governors. His daughter Janet and her husband Alan Levy, and their daughter Lauren are now managing the business.  The company continues to be well respected in the industry, and is known for their knowledge and integrity.

vintage art deco emerald and diamond earrings from DeYoung Collection
vintage Cartier platinum diamond bracelet from DeYoung Collection
Mellerio Diamond Brooch from the DeYoung Collection

J. & S.S. DeYoung, Inc. specializes in fine quality diamonds and color gemstones, such unheated Burma rubies and sapphires, Kashmir sapphires, Colombian emeralds and fancy natural color diamonds. We also have a wide selection of beautiful 20th century jewelry, most of which comes from private sources and special estate collections.  Many pieces are originals from major design houses such as Cartier, Van Cleef & Arpels, Harry Winston, and Tiffany, among other fine makers.

One special item we currently have is a pair of Art Deco Emerald and Diamond Drop Earrings.  Featuring two fine octagonal Colombian Emeralds weighing 14.03 carats, the Earrings are mounted in platinum with diamond and onyx accents. Dating from circa 1925, the Earrings are finely made and are an exceptional example of Art Deco style and craftsmanship.

Meet our dealers

View all
View all
slick arrow slick arrow