New York

We are part of an 80 year old Detroit family tradition which includes expertise in auction, appraisal, gemology and industry related services we provide services to banks, collectors, estate executors, curators, dealers and sellers who trust us to provide service of the highest quality. We are privileged to be part of a company with a worldwide reputation for expertise, integrity and service. We reach a global market through our international network of buyers, collectors and major dealers. Our clients know that they can expect personal service and commitment when it comes to buying and selling their fine diamonds, gems, objects, artwork and jewelry.

We have committed ourselves to continuing education, state of the art equipment and service that will help you have a successful selling experience. We invite you to contact us when you are ready to buy or sell your valuable diamonds, jewelry, artwork and objects’ d art. Please contact us and our team of dedicated professionals with any questions.

Enjoy the entertainment and ease of buying at auction. At Joseph DuMouchelle we make the experience of buying and selling, safe, easy and fun.

We look forward to hearing from you soon!


  • 580 5th Ave #333, New York, NY 10036
  • (888)441-5151
  • Hours: 11:00am to 5:00pm
    Monday through Friday