About Us

J. & S. S. DeYoung, Inc. is a family owned business that purchases and sells high quality jewelry and gemstones. The family has been in America’s jewelry trade since 1835 and is highly regarded for their expertise and integrity. 
We Specialize In

  • Fine Art Deco and Period Jewelry
  • Signed pieces by Cartier, Van Cleef & Arpels, Harry Winston, Tiffany, and other fine makers
  • Natural Color Diamonds
  • Natural, unheated Burma Rubies
  • Natural, unheated Kashmir, Burma and Ceylon Sapphires
  • Old mine Columbian Emeralds
  • Alexandrites, Natural Pearls and Jadeite

Our Services

DeYoung provides jewelry professionals with access to our world class inventory. We also offer our expertise to lawyers, banks and retail jewelers to evaluate and purchase entire estates or individual items.

The Smithsonian

In addition to buying and selling exceptional fine jewelry, the company has a long history of donation and a special relationship with the Smithsonian Institution. Sydney DeYoung donated both a rare pink and red diamond to the museum’s gem collection.