Accredited Gemologist Association
Contact InformationHome
Locate an AGA Member - Membership Information - Donations
AGA Antonio C. Bonanno Award - Resources, Links & Articles- Event Info - Event Gallery
Please consider supporting AGA like this generous conference sponsor.


AGA Diamond Sponsor

2017 AGA Platinum Sponsor -

AGA Ruby Sponsor

American Society of Appraisers
American Society of Appraisers


Heritage Auctions

Heritage Auction

Gemmological Association
of Great Britain

AGA Emerald Sponsors

Canadian Gemmological Association

Canadian Gemmological



Press Release

The AGA Conference...

Where great minds meet!

John Koivula and Richard Hughes at the AGA Gala


The 2019 AGA Tucson Gemological Conference & Gala
with the Antonio C. Bonanno Award for Excellence in Gemology - Register now!

Latest Gem Research Highlights
Wednesday, February 6, 2019

Spend the day with peers as you learn of the latest gem finds, research & industry-leading trends from those in the know. Gemological challenges of today and the future will be addressed by internationally recognized gem researchers.

Daniel Nyfeler

Gemstone Paternity Test - Daniel Nyfeler (bio)

The cutting-edge technology behind gemstone traceability will be explained by Daniel Nyfeler, Managing Director of Gübelin Laboratory, Switzerland. Nyfeler will share the lab's program to identify the history of gem materials combining DNA tagging and blockchain accountability. Initiated with emeralds in partnership with Gemfields, the "Provenance Proof Initiative" brings the discussion of industry transparency to the forefront.

Jeffery Bergman

Our Newest Emerald Source - Jeffery Bergman (bio)

Jeffery Bergman, founder and director of Primagem, Thailand will report on the state of the emerging Ethiopian emerald production. Mr. Bergman is a key participant in this market and will discuss deposits, qualities, identifying characteristics, treatments and projections for future production and their distribution channels.

Gina Latendresse

Pearls of the New World & Beyond - Gina Latendresse (bio)

Natural pearls from the Americas captivated the European market hundreds of years ago and continue to be a vibrant industry niche. Learn about U.S. freshwater varieties like winged, pimplebacks, rosebuds and snail pearls. Did you know that the American freshwater pearl business also supplies nucleus material for the creation of Tahitian pearls? Attributes of other natural pearls, including conch, scallop, abalone, Baja, Melo and Quahog will be examined as well as some telltale signs of cultured pearl detection. Numerous examples will be available for hands-on examination by attendees.

Dr. Claudio Milisenda

The New Rulings, an FTC Review - Laura Koss (bio)

Laura will be answering your questions on the latest revisions to the Federal Trade Commission's guides on jewelry and gemstones.

If you wish to submit a question, please do so by 1/20/19 via this AGA contact form. Although not all questions may be answered, we do want to make sure major areas will be covered as time permits.

Dr. Claudio Milisenda

An In-depth Look at Tourmaline - Dr. Claudio Milisenda (bio)

The tourmaline group includes a number of complex boron-aluminium silicate minerals and surpasses all other gemstones by its wide range of colours. Well-formed tourmaline crystals are valued by mineral specimen collectors and cut specimens belong to the world's most popular gemstones. Dr. Milisenda, Managing Director of the DSEF German Gem Lab, will cover the commercial important varieties of tourmaline, discuss about origin factors, as well as treatments and imitations of tourmaline currently encountered in a gemmological laboratory.

Optional Workshops available to conference registrants on a first come, first serve basis. These workshops will run simultaniously with Dr. Claudio Milisenda's above program on Tourmaline.

Dr. Çiğdem Lüle

Workshop 1: Gem Treatments & Their Influence on the Market - Dr. Çiğdem Lüle (bio)

This workshop will bring practicing gemologists and appraisers up to date on gem treatments, their prevalence, identification challenges and their effect on the global gem business. The focus will be on some overlooked yet ubiquitous treatments such as coated gems of different species. Attendees will have the opportunity to examine several treated gems at the end of the presentation.

This workshop is full. You're welcome to be added to a waiting list, however I suggest you consider one of the workshops below since we rarely have an opening.

Gary Smith

Workshop 2: Carats, Carrots or Karats - Gary Smith (bio)

Gary is a forensic gemologist and master goldsmith. He is providing attendees with an overview of the history of precious metal testing from ancient times to present day electronic devices plus an analysis of the FTC's latest Guides for the Jewelry, Precious Metals, & Pewter Industries 16 CFR Part 22.

Do you know if it's legal to sell 8k gold jewelry? If not, this is the workshop for you!

Workshop 2 is limited to 14 participants. As of now only 1 seat is remaining.

Sam Lloyd

Workshop 3: Building a Better Foundation - Sam Lloyd of Gem-A (bio)

If you don't have a microscope or refractometer handy – what do you do? Hand-held testing equipment can provide quick and easy clues as to the identification of gemstones, they even fit in your bag or pocket! This hands-on workshop will guide you through some of Gem-A's favourite tools; it will strengthen your technique and provide you with some handy takeaway tips and tricks that you can use anywhere in the field – whether you're at an industry event, or, in an actual field! This workshop is perfect for gemmologists that are just getting started with hand-held tools or for those looking for a refresher.

Workshop 3 is limited to 14 participants. As of now only 1 seat is remaining.

Gala Dinner Dance Tickets Only

If you wish to attend our Annual Gala Dinner Dance but not the conference, tickets are available here. Please follow directions for Gala Only tickets.

Early Pricing for Gala Only Tickets (by 1/25/2019)
AGA & Gem-A Members: $75, Non-Members: $105

(Tickets at the door or online after the early deadline are $95 & $125 respectively.)

No refunds after 1/25/2019

Early Registration Conference Fees
Available on-line until January 25, 2019

Conference registration includes continental breakfast, light lunch & the AGA Annual Dinner Gala featuring great networking opportunities, live band, dance floor & the presentation of the AGA Antonio C. Bonanno Award for Excellence in Gemology.

Early Registration Fees*:
AGA & Gem-A Members: $195
Non-Members: $245

Register Now...

LOCATION: Tucson Marriott University Park Hotel Conference Center, 880 E. Second Street, Tucson, AZ 85719 (map)

February 6, 2019
Check-in: 8:00 am, Program: 8:30 am - 4:30 pm
Reception: 6:00 - 7:00 pm, Gala Dinner Dance: 7:00 - 11:00 pm

* Registrations at door or online after the early deadline are $230 & $280 respectively.

No refunds after 1/25/2019


Contact Information Home Locate an AGA Member Membership Information Donations Event Gallery AGA Antonio C. Bonanno Award Resources, Links & Articles Event Info