Peter D. Indorf, GG, RGA
Custom Jewelry Designer | Graduate Gemologist | Registered Gemologist Appraiser
Peter Indorf Designs • Jewelry Appraisal & Liquidation Solutions
www.peterindorf.com | www.jewelryappraisal-liquidation.com
Professional Education & Certifications
Uniform Standards of Professional Appraisal Practice
USPAP Compliant 2025 - 2027
International School of Gemology ISG)
Ethics Course - June 15, 2025
Registered Gemologist Appraiser (RGA), March 10, 2025
Personal Property Appraisal, February 21, 2025
Evaluating Damaged Jewelry, November 22, 2024
Created and Treated Gems, October 13, 2024
Gemology Tools and Techniques, July 29, 2024
Comprehensive Gem Identification (4-Day Intensive, Helotes, TX), June 11–14, 2024
Colored Gemstones, May 8, 2024
Diamonds, April 24, 2024
Pearls, January 26, 2024
Introduction to Watches, January 12, 2024
Gemological Institute of America (GIA)
Graduate Gemologist (GG), 1987
Jewelry Design Course, 1979
Colored Gemstone Grading, 1985
Advanced Diamond Clarity Grading, 2011
Field Gemology, 2011
Identifying Glass Fillings & Healed Fissures in Corundum, 2015
Identifying Heat Treatment of Corundum, 2015
Emerald Country of Origin Determination, 2019
Identifying Laboratory Grown Diamonds, 2019
American Gem Society (AGS)
Registered Jeweler (RJ), 1982–2016
Certified Gemologist (CG), 1986–1987
Certified Gemologist Appraiser (CGA), 1987–2016
Accredited Gem Lab, 1987–2016
Vintage Certified Gemologist Appraiser, 2016–2024
Color Vision Testing, 2015
Certificate of Achievement, 2018–2019
International Society of Appraisers (ISA)
Core Appraisal Courses 100 & 101, 1995–Present
Accredited Gemologists Association (AGA)
Accredited Senior Gemologist, Retired (ASGR), 2017–Present
Cultured Pearl Association
Certified Pearl Specialist, Pearls as One, August 2018
Jewelers of America
Certified Management Professional, 2002
Gemvision
Training Certificate of Completion, 2015
Dale Carnegie
Course Graduate, 1974
Management Seminar, 1976
Bryant College
Management Studies, 1980
University of Maine
Antique Jewelry Seminar, 1975
Teaching & Presentations
Yale University – Co-taught Seminar: Gems and Gem Materials (with Catherine Skinner), 1985
AGS Conclave – Phoenix, AZ – Presenter: The Internet and the Single Store Independent, 2001
AGS Conclave – Washington, DC – Presenter: Custom Jewelry Seminar, 2015
Professional Memberships
National Association of Jewelry Appraisers (NAJA), Member, 2023–Present
American Gem Trade Association (AGTA), Member, 2020-Present
Association for the Study of Jewelry & Related Arts, 2019–Present
Conference Attendance & Continuing Education
NAJA 63rd Ace It Conference – Tucson, AZ, February 2025
NAJA 61st Ace It Conference – Tucson, AZ, January 2024
NAJA 60th Ace It Conference – Providence, RI, August 2023
AGS Conclave – Seattle, 2019
Jewelry History Series – Miami Beach, 2019 & 2020
Jean Schlumberger Exhibit – Drawn to Beauty, St. Petersburg Museum of Art, 2019
+1 321-914-0118