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.

Space for this Hands-on GIA session 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.

Space for this Hands-on GIA session is limited to 24 participants and is first-come, first-served.

Dive into the microworld of natural diamonds with a renowned analytical microscopist, gemologist, and award-winning photomicrographer. This presentation will explore some of the most fascinating inclusions and microfeatures found in natural diamonds as well as discuss why they are gemologically interesting and geologically significant.

Space for this Hands-on GIA session 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.