Live Online Seminar

Ruby: Country of Origin Determination Seminar

A large ruby crystal in calcite with three faceted rubies in front.
Myanmar (formerly Burma) is one of the most desired sources of high quality ruby and often demands premium prices. These rough and polished stones are excellent examples of Myanmar ruby. Courtesy of Edward Boehm.

Learn how to determine a ruby's source and how source affects value.

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.

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.

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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.

Silk and rounded crystal inclusions


Each online seminar is two hours. New dates may be added throughout the year. The number of attendees will be limited to ensure the best experience for attendees.

  • July 6, 2021 – 10 a.m. to 12 p.m. Pacific Time

This live seminar will be delivered through an online learning platform.


$195 USD (GIA Alumni receive a 10% discount)


Please complete the online registration form. You will be provided information about how to access the platform after your registration is confirmed.

The continuing education offerings offered by the GIA Alumni Association™ are considered avocational or recreational in nature and are not intended to prepare individuals for entry-level employment. They are non-credit bearing and do not lead to a GIA academic credential. They are not eligible for state or federal student financial aid programs and do not fall under the approval of the Accrediting Commission of Career Schools and Colleges (ACCSC) or the Distance Education Accrediting Commission (DEAC).

Dates, course content and instructors are subject to change.