American Institute of Gemological Research

Specialties

AIGR offers its services for jewelry appraisal while you wait; also gem identification, micro-​chemical analysis, grading and classifying gemstones, and micrography among other specific needs. If your appraisal is for insurance, we guarantee that your insurance company will accept our appraisal. We also have extensive experience with estates and other family law situations.

History

Established in 1979.

History – AIGR was founded in February of 1979 as an independent gemological laboratory devoted solely to jewelry appraisals, gemological research, and monetary evaluation of gems and fine jewelry. All evaluations are backed by a micro-​chemical analysis and state-​of-​the-​art instrumentation.

Clients – AIGR is currently providing or has provided gemological services for the following companies:

Jared the Galleria of Jewelry

J. C. Keepsake Jewelers

Samuels Jewelers

Schubach Jewelers

Zales Jewelers

Slovaks Jewelers

Jade House (jade importer and retailer)

Ron Pingenot (stone cutting, wholesale)

Kay Jewelers

Reeds Jewelers

Hearts Jewelers

Marquise Diamond Centers

Pan Pacific Investments

Marvin Dash & Co.

Friedlanders of Seattle

Charles Anthony Diamond Investments

Overland Gems

Brendan Jewelers

Bailey Banks & Biddle Jewelers

Fred Meyer Jewelers

Santa Barbara Municipal Court System (professional witness)

Meet the Business Owner

Warren and Melinda P.

Business Owner

AIGR’s graduate gemologists are certified by the Gemological Institute of America perform appraisals.

Warren Pressler

American Gem-​trade Association (Nomenclature)

National Association of Jewelry Appraisers June 1^st 1982

Graduate Gemologist, G.I.A. November 6^th 1978

Colored Stone Grading Course, G.I.A. October 7^th 1976

Diamond Grading and Evaluation, G.I.A. November 18^th 1976

General Education Pierce College 1972 – 74

Completion of McBeth Color Science Colorimetery & Spectrophotometry

Completion of Hue Discrimination and Color Vision Testing

Melinda Pressler

GIA Graduate Gemologist diploma April 2006

GIA Gem Identification March 2006

GIA Colored Stones Course May 2004

GIA Diamonds Graduate October 2003

Assistant appraiser for AIGR since July 2002

General Education with an emphasis in Accounting Metropolitan State College of Denver 1999 – 2002

General Education with an emphasis in Comparative Literature Brigham Young University 1978 – 1979