Live Online Seminar

Advanced Colored Stones Country of Origin Seminar



Country of origin determination is a pressing issue in the colored gemstone industry. Certain origins can add extra value to the stones. This webinar is dedicated for the complexity of this issue and how GIA’s gemologists make their determination.
Country of origin determination is a pressing issue in the colored gemstone industry. Certain origins can add extra value to the stones. This webinar is dedicated for the complexity of this issue and how GIA’s gemologists make their determination. Courtesy: William Larson, Pala International.

This two-day live online seminar will provide a comprehensive and in-depth discussion of country of origin determination for many colored gems including ruby, sapphire, emerald, spinel and alexandrite.  

Participants will be guided by GIA researchers with expert knowledge of the methods used by GIA laboratories to determine country of origin for many colored stones. Learn from illustrations, images, video and live demonstrations that let you see exactly what our experts see as they examine a variety of colored stones under a microscope. Attendees will have the opportunity to interact with the instructor and will receive digital reference material.
 

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The number of attendees will be limited to ensure the best experience for attendees.

Topics include:

  • The importance of country of origin determination

  • How GIA determines colored gemstone country of origin, including the GIA field gemology program and the building of an origin reference collection

  • Global colored gemstone deposits

  • Instrumentation used in country of origin determination

  • Country of origin determination of ruby, sapphire and emerald, spinel, alexandrite and other colored gemstones

    The system GIA uses in the lab for identification of elements in mineral specimens, includes a Thermo Fisher iCAP Qc ICP-MS, coupled with an Elemental Scientific Lasers NWR213 laser ablation system with a frequency quintupled Nd:YAG laser operated in Q-switched (pulsed) mode at a wavelength of 213nm and pulse duration of 4 ns.  Laser sampling was performed in the third generation two-volume cell from ESI (TwoVol2). The laser-generated aerosol was collected by a device (or cup) that is supported evenly throughout the entire range of motion with a specially-designed internal movement system.  This system minimizes inconsistent gas dynamics and a positional sensitivity dependence. A signal smoothing device was also installed downstream of the wye that mixes the nebulizer gas (argon) and carrier gas (helium) to minimize the RSD (Relative Standard Deviation) of signal. Photo: Kevin Schumacher

SEMINAR AVAILABILITY

Each online seminar consists of multiple sessions over two days from 8 a.m. - 4 p.m. Pacific Time

New dates and locations may be added throughout the year. This live seminar will be delivered through an online learning platform.

COST

$995 USD

REGISTRATION

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

Continuing education offerings 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).