Conclave 2026

This Hands-on GIA session will be repeated. Space is limited to 24 participants and is first-come, first-served.

Buyers of used jewelry and those who take in jewelry for appraisal or repair go through a process to identify, analyze, and assess the quality and nature of an item. Many know only certain aspects of manufacturing and are only able to recognize a narrow range of certain make traces. GIA has a systematic framework that will guide you in identifying areas to gain more exposure. Through this lecture and hands-on seminar, you will learn “jewelry forensics” basics, including identifying hand-fabricated components, cast components, CAD/CAM manufactured components, and cast-in-in-place gemstones. Attendees will understand and learn a systematic process and recognizing basic traces of manufacturing processes.

This Hands-on GIA session will be repeated. Space is limited to 24 participants and is first-come, first-served.

In today’s market, it is increasingly rare to come across ruby and sapphire whose beauty and appeal is entirely due to natural processes. During this hands-on seminar, GIA experts provide an in-depth understanding of various artificial treatments for ruby and sapphire. Through close examination of specimens, participants will learn practical tips for identifying these treatments and gain a better understanding of why these stones were treated at all.