Giving Back

Chatham has a long history of continuous support for education and gemological research. We’re proud to have contributed more than $1,500,000 to museums, educational and research institutions, and charities.



In the 1950s, our founder Carroll F Chatham was asked by the Smithsonian Institution to grow the largest emerald he could. He spent three years growing a crystal that was more than 2,000 carats, about the size of a baseball, which he donated to the museum’s collection.

Chatham Museum Donations:

  • American Museum of Natural History
  • Harvard Museum
  • Museum of Mineralogy in Hamburg, Germany
  • Museum of Idar-Oberstein
  • Natural History Museum of Los Angeles
  • Smithsonian Institution



One of Chatham’s core values is the continuing education and professionalism of the jewelry industry. We are strong advocates of consumer protection through truth and disclosure. We have donated over $500,000 to the Gemological Institute of America, the world’s leading gemological educational institution. Through our support, students have been able to study our crystals and gemstones for clearer identification between lab-grown and naturally-mined gemstones. Our support of GIA research has helped to further the frontiers of gemological knowledge. Chatham’s donations have supported the GIA, GIA Alumni Association, and GIA Japan.

Tom Chatham has also personally donated his time, providing global lectures on growth of gemstones and diamond for more than 30 years. He has personally given away over 20,000 Chatham crystals to further promote education.

Chatham Professional Association Donations:

  • American Gem Society
  • Asian Institute of Gemological Science
  • Brazilian Gemological Association
  • Brazilian Institute of Gemology and Mineralogy
  • Canadian Gemological Association
  • Gemological Association of Great Britain
  • Gemological Association of Hong Kong
  • Gemological Institute of America
  • Revere Academy of Jewelry Arts
  • Women’s Jewelry Association



Chatham is a constant supporter of higher education. Our goal is to inspire young professionals to pursue careers in the jewelry industry. Chatham has sponsored the annual Gem Grab Bag auction at the University of Maryland, which funds student grants. This initiative, which benefits the Maryland Parents Association Student Scholarship Fund, helps students who face financial hardship and are at risk of not being able to complete their education. So far we’ve been able to grant Chatham scholarships to more than 25 students.

Chatham University Donations:

  • Iowa State University
  • Northeastern Illinois University
  • Oklahoma State University
  • University of Hamburg, Germany
  • University of Maryland



Chatham Research Laboratories has been an ongoing member and supporter of the American Crystal Growth Association. To further research in the development of ruby lasers and computers, Chatham donated many crystals to the association in the 1950s and 1960s. This resulted in our emeralds being sent to the planet Mars within the Rover dune buggy helping to analyze the geology of the red planet.

Chatham Scientific and Charitable Donations:

  • American Crystal Growth Association
  • City of Hope, Louisiana
  • NASA
  • Vietnam Veterans of America