About The Plumb Club

The Plumb Club is a unique coalition of leading and important suppliers spanning all facets of the jewelry, diamond and watch industries

Our membership accounts for s significant percentage of the domestic fine jewelry market.

Purpose Statement:

The Plumb Club is an organization of suppliers whose purpose is to connect its members and their customers and help shape the future of the jewelry industry.

Vision Statement:

The Plumb Club is a responsible supply side organization recognized for leadership, adding value, and positively impacting the jewelry industry.


Board of Directors
  • President: Jonathan Goodman Cohen – IB Goodman
  • Vice President: Michael Lerche – Goldstar Jewellery
  • Treasurer:Michael Langhammer – Quality Gold Inc.
  • Secretary: Roger Forman – Marathon Company
  • Jeffrey Cohen – Citizen Watch Co.
  • Corinna Bhasin – FD Worldwide
  • Roopam Jain – Simply Diamonds / Jewelmark
  • Samuel Sandberg – Firestar Diamonds / A.Jaffe
  • A. J. Tosyali – Benchmark
  • Victor Weinman – Tache’ USA