Report Check Submit A Gem

LIST YOUR STORE GIA Store My GIA

Contact Us Locations

General Questions: 1-800-421-7250

Please choose a language

English (US) English (UK) 简体中文日本語

Report Check
Submit A Gem
LIST YOUR STORE
GIA Store
My GIA

- Alumni Collective
- Continuing Education

Lecture

GIA Knowledge Sessions: The History of Engagement Rings

Thursday, January 28, 2021
Webinar

Upcoming Events

See All

You Might Also Like

Find a Retailer

learn more

Shop the Campus Store

Learn More

Abstract art with fluorescent rainbow and dark brown triangle patterns

Subscribe to Knowledge Rocks Emails

Learn More

Diamond Origin Reports

Learn About Diamond Origin Reports

Learn more

Back to top

Show Caption

Close Caption

Gem Encyclopedia
Education
Research & News
Analysis & Grading
About GIA

GIA Instruments
Retailer Support
GIA Store
FAQs
Pressroom
GemKids Website
Alumni Collective
Quality Assurance Benchmarks for Jewelry
4Cs of Diamond Quality

Student Consumer Information
Gem & Jewelry Careers
Careers at GIA
Locations
Report A Concern
Support GIA
Contact Us
Developer APIs

Email Preferences

Download the New GIA App

Follow Us

English (US)

Copyrights and Trademarks
Privacy Notice
Terms of Use
Cookie Policy
Ethics and Compliance
Transparency in Coverage Rule
About This Site

© 2002 - Gemological Institute of America Inc. GIA is a nonprofit 501(c)(3) organization. All rights reserved.