BOCI Trade Association
- Represents nearly 200 manufacturers divided into six groups: fashion jewelry, precious metal jewelry, silversmiths, pewterware, decorative gifts and objects, art craft industries.
- http://www.boci.org/

The Jewelry Dealers Network
- A members only trade and informational network for all aspects of the jewelry trade.
- http://www.jewelrydealersnetwork.com/

Manufacturing Jewelers & Suppliers of America
- MJSA is a national jewelry trade association working to provide long-term stability and prosperity for jewelry manufacturers and their suppliers.
- http://mjsa.polygon.net

DiamondFloor.com
- A B2B ecommerce exchange floor for the professional certified diamond trade and jewelry industry.
- http://www.diamondfloor.com/

Polygon
- The purpose of this site is to provide information and online services to the jewelry industry.
- http://www.polygon.net/

Gemnet
- British based Gem and jewellery Network, membership is 300 UK Pounds per year.
- http://www.gemnet.co.uk