The Jewelry Arts Institute
2180 Broadway
(Between 77th and 78th Streets)
New York, NY 10024
www.jewelryarts.com
Mailing Address:
Gemological Institute of America (GIA)
World Headquarters
The Robert Mouawad Campus
5345 Armada Drive
Carlsbad, California 92008
Phone: 800-421-7250 + ext.
Outside the U.S. and Canada: 760-603-4000 + ext
www.gia.edu
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Hoover & Strong
10700 Trade Road
Richmond, VA 23239-3000
1800-759-9997
refiners and manufacturers of precious metals
www.hooverandstrong.com
Northwest Pitchworks
1317 Roland St.
Bellingham Washington
USA 98226
Tel: 360 715-1772
Contact: Vincent Lalonde
www.northwestpitchworks.com
Otto Frei & Jules Borel
P.O. Box 796, 126 Second Street
Oakland, CA 94604
Fax 510-834-6217
Phone 510-832-0355
Toll Free 1-800-772-3456
www.ottofrei.com
ALLCRAFT
135 W. 29th St.
Suite 402
New York, NY 10001
1-800-645-7125
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