19 W. 21st St., Suite 705, New York, NY 10010; (212) 620-0900; fax (212) 352-9054; e-mail ica@gemstone.org.
A nonprofit organization representing wholesalers, miners, and cutters of colored gemstones from 41 countries. The association's goal is to foster international cooperation and communication.
Sponsors ICA Gembureau, a gemstone promotion and information service and publishes the quarterly magazine, InColor. An international ICA Congress is held every other year.