For answers to frequently asked questions about jewelry, visit the society's Web site.

8881 West Sahara Avenue
Las Vegas, NV 89117-5865
Tel: (866) 805-6500
https://www.americangemsociety.org

For information on designer jewelry, contact

PO Box 1149
Hermitage, PA 16148-0149
Tel: (724) 979-4992
Email: info@ajdc.org
http://www.ajdc.org

120 Broadway, Suite 2820
New York, NY 10271, NY 10271
Tel: (877) 283-5669
Tel: (615) 385-5301
Email: info@diamondcouncil.org
https://www.diamondcouncil.org

For information on tuition prices, application procedures, and course descriptions, visit

5345 Armada Drive
Carlsbad, CA 92008-4602
Tel: (800) 421-7250
https://www.gia.edu

For certification information, contact

120 Broadway, Suite 2820
New York, NY 10271-2802
Tel: (800) 223-0673
Email: members@jewelers.org
https://www.jewelers.org

For career and school information, visit

https://www.mjsa.org