Why This Seminar?

The value of high-end colored stones can increase dramatically based on their origins, which is why ‘country of origin’ has become the most important value factor to consider, in addition to the quality factors of individual stones such as color, size and shape.

Ruby consistently demands some of the highest prices of all gems. In the past half-century, more ruby sources have been discovered, but some sources carry a strong association with legends, romance and consistent high quality that can affect the value of a ruby.

How Does it Work?

This seminar will introduce the main sources of ruby around the globe, their status in the market, and the methods the GIA Laboratory applies to determine ruby country of origin, including the utilization of traceable sample collections and advanced testing techniques in combination with decades of accumulated experience from gemologists and researchers.

This seminar is ideal for sales associates, retailers, investors, collectors and researchers. Familiarity with colored stone value factors is recommended.

Dense concentrations of silk and rounded crystal inclusions suggest a Mogok, Myanmar, origin for this ruby. Photomicrograph field of view 2.37 mm. Photo: Charuwan Khowpong

What You'll Learn

  • The main ruby sources around the globe and the microscopic features that are characteristic for each.

  • Familiarity with the advanced testing that modern gem laboratories use to help determine country of origin for ruby.

  • The complications and challenges involved in ruby country of origin determination.

Participants will be provided a digital reference guide, links to important ruby country-of-origin determination articles, a ruby inclusion chart, and are encouraged to ask questions as they are guided by a GIA researcher who will share their expertise through illustrations, images and lecture.

Topic of Interest
Colored Stones and Pearls
Ways to Learn
In Person | 2 Hours
$195 USD (GIA Alumni receive a 10% discount)
Suggested for
Gem and Jewelry Professionals, Gemologists, Researchers, Appraisers
How to Register
Click on the Register Now button and create an account on the GIA Alumni Collective Community