There are many trade organizations you should be knowledgeable about. The list will continue to grow.

Jewelry

World Gold Council    Platinum Guild International

Manufacturing Jewelers and Suppliers Association

American Gemstone Trade Association   International Colored Stone Association

Jewelers Vigilance Committee    Jewelers of America  American Society of Appraisers
 

Gemological Society of Great Britain   Gemological Institute of America

Society of North American Goldsmiths  American Craft Council

Appraisal Information Services  Jewelry Information Services

Diamond High Council HRD