Grading

AGA Names William Hanneman as Recipient of 2018 Bonanno Award

GradingDec 29, 2017

AGA Names William Hanneman as Recipient of 2018 Bonanno Award

His contributions to the gem community include various tools designed to be portable and practical and books that make the field accessible to all.

20171229_Bill-Hanneman.jpg
Dr. William Hanneman, at left, has been named as the recipient of the 2018 Antonio C. Bonanno Award for Excellence in Gemology. At right is his friend and the AGA’s first award recipient, Alan Hodgkinson.

San Diego--The Accredited Gemologists Association has announced that William Hanneman will receive the 2018 Antonio C. Bonanno Award for Excellence in Gemology.

The award recognizes those who have made significant contributions to the field. Recipients are chosen through a majority vote of AGA members.

Hanneman has contributed a great deal to the gem community, the AGA said, from education to various innovative tools, and exemplifies what the Bonanno Award represents: gemological expertise and excellence in gemological practice, research and education, and a dedication to sharing gemological knowledge through formal teaching and professional collaboration.

The tools he created are notable because they filled a gap for something portable, affordable and practical.

They include the Diamond Eye, a reflectivity meter providing RIs for gems with RI values over 1.80. It provided readings for gems like diamond and synthetic moissanite, CZ and other simulants.

Another tool provided not only an RI, but birefringence and dispersion for faceted gems, with RI values up to 2.37 and without the need for toxic liquids.

His color filters, developed in collaboration with Alan Hodgkinson, provided quick and easy pre-screening ID, and his specific gravity balance was the first to provide direct readings, even for gems weighing less than a carat, the AGA said.

He also has authored a number of books, including “Guide to Affordable Gemology,” “Pragmatic Spectroscopy for Gemologists,” “Diamond Cut Grading Simplified” and “Naming Gem Garnets,” all motivated by his desire to make gemological information affordable and accessible to all.

“Dr. Hanneman has dedicated decades to providing gemologists with practical solutions to many of gemology’s big challenges. It would difficult to think of anyone more deserving of this recognition,” AGA President Stuart Robertson said.

Previous recipients of the Bonanno award include Al Gilbertson, Cigdem Lule, Thomas Hainschwang, John Emmett, Emmanuel Fritsch, Stuart Robertson, Richard Hughes, Christopher Smith and James Shigley, among many others.

The AGA Antonio C. Bonanno Award for Excellence in Gemology will be presented at the AGA’s Gala Dinner Dance at the end of its Tucson Conference, held on Wednesday, Jan. 31, from 6:30 to 11:00 p.m. at the Tucson University Park Hotel.

The award includes a personalized plaque and $2,000 research honorarium funded by the AGA membership.

For additional information or to attend the conference or gala, go to AccreditedGemologists.org or call 844-288-4367.

Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

Alnesha Bianca Handy and James Arthur Graves Graham Jr.
CrimeAug 25, 2026
Florida Woman Scammed Out of $1.5M in Jewelry, Precious Metals

Two suspects have been arrested in connection with the complex phone scam.

Technology Therapy Group Founder and CEO Jennifer Shaheen
ColumnistsAug 25, 2026
Proof Before Purchase: The Gen Z Way to Buy

In her first column for National Jeweler, Jennifer Shaheen asks jewelers if they know how to connect with the next generation of consumers.

SSEF logo
Events & AwardsAug 25, 2026
SSEF Opens 2026 Applications for Gemology Education Scholarships

The annual awards cover tuition for an on-site educational course at the Swiss lab, as well as flights and lodging.

Cover.jpg
Brought to you by
Your Piece Could Be the One Editors Talk About

Submit your pieces for a chance to win in this year's competition.

Brent Neale x Blackberry Farm Blackberry Pendants
TrendsAug 25, 2026
Brent Neale Celebrates Blackberry Farm’s Anniversary With Jewelry

The jeweler partnered with the Tennessee resort to honor its 50th anniversary with limited-edition blackberry pendants and earrings.

Weekly QuizAug 20, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Genna Zimmer Reeds Jewelers
EditorsAug 24, 2026
Q&A: Reeds Jewelers VP Genna Zimmer on 80 Years in Business

The third-generation jeweler shared how the North Carolina retailer is celebrating this milestone and the love story that started it all.

Rio Grande Metalwerx Argentium Silver leaves
Events & AwardsAug 24, 2026
Rio Grande, MetalWerx Host Argentium Silver Workshop

The class, led by renowned metalsmith Cynthia Eid, highlighted Argentium silver as an alternative to gold amid high prices.

1872-x-1052-July-ad (1).png
Brought to you by
Why More Jewelry Retailers Are Hosting Turnkey Estate Buying Events

Retailers are seeking new ways to attract customers, increase traffic, and create revenue – Estate buying events are a popular solution.

Jewelry at JIS Miami
Events & AwardsAug 24, 2026
JIS Miami Opens Fall 2026 Registration

The show is slated for Oct. 16-19 at the Miami Beach Convention Center.

Francesca Villa Empress Joséphine Necklace
CollectionsAug 24, 2026
Francesca Villa Honors Napoleon, His Empresses In New Capsule

The “Empresses” capsule uses 19th-century medals depicting Napoleon, Joséphine, and Marie-Louise across five one-of-a-kind pieces.

Interior of Dick’s Sporting Goods store
SurveysAug 21, 2026
These Are 2026’s Hottest Retailers, Says NRF

The retailers at the top of the list offer affordable products and fun, discovery-fueled experiences.

Daniel Bing
WatchesAug 21, 2026
Bremont Names Former Vacheron Constantin Exec CMO

Daniel Bing was formerly the marketing director for the Americas at Vacheron Constantin.

Bijules x Kamyen Topspin Tennis Bracelet in Grass Green
CollectionsAug 21, 2026
Bijules, Kamyen Serve Up ‘Topspin’ Tennis Bracelet Ahead of US Open

In our Piece of the Week, the designers reimagine the tennis bracelet with green enamel wrapped around a strand of “Desert Diamonds.”

Graphic for Episode 8 of the My Next Question podcast
PodcastsAug 20, 2026
Episode 8: Diamond Industry Update With David Bonaparte & Ronnie VanderLinden

The industry veterans join the podcast to discuss diamond marketing, the FTC Jewelry Guides, and lobbying for lower tariffs.

Gemstone AI app screenshots
TechnologyAug 20, 2026
A New AI-Powered Gemstone Identification App Is Here

Founder Vik Westermann said the app is a “starting point” to inspire people to work with appraisers and gem labs, not replace them.

Verdura unicorn brooch
AuctionsAug 20, 2026
Storied Unicorn Brooch Up for Auction Gallops to New Home

The Verdura brooch, which belonged to the late Virginia Fortune Ryan Ogilvy, was sold to a private collector in Asia.

Lianna Carter, Lauren Edwards, Thomas Koslowski, Erin Perry, Heran Wang
Events & AwardsAug 20, 2026
MJSA Education Foundation Names 5 Scholarship Winners

The five students were awarded a total of $10,000 through the nonprofit’s 2026 “Future of Jewelry Making” scholarship.

The Plumb Club 2026-2027 Executive Committee and Board Members
MajorsAug 20, 2026
Plumb Club Elects 2026-2027 Board

Steven Lerche is now beginning his term as the youngest member to become president of The Plumb Club’s elected executive committee.

Mike Alexander and Scott Murphy
MajorsAug 19, 2026
Mike Alexander To Succeed Scott Murphy as Jewelers Mutual CEO

Murphy will retire at the end of the year and Alexander, currently the company’s president, will take over at the start of 2027.

Spinelli Kilcollin Trade-In Bar Program Imagery
Policies & IssuesAug 19, 2026
Spinelli Kilcollin Embraces Dupes With Trade-In Program

The jeweler is encouraging customers who own lookalike rings to come into the store and trade them for credit towards an authentic piece.

Woman wearing Zales jewelry
MajorsAug 19, 2026
Zales Wants You to Wear Fine Jewelry Every Day

The new campaign, “You Are The Occasion,” discourages shoppers from saving their fine jewelry for special occasions only.

Former GJEPC Chairman and second-generation Indian diamantaire Vasant Mehta
SourcingAug 19, 2026
Vasant Mehta, a Dedicated Diamond Industry Leader, Dies at 81

Mehta led India’s GJEPC through the 2008 financial crisis and was respected worldwide for his wisdom, integrity, and knowledge.

Alfredo Colmenero-Martinez and Jarren Frazier
CrimeAug 18, 2026
2 California Men Arrested in Fatal Vehicle Smash Robbery

One is the driver who allegedly crashed a car into a Sacramento jewelry store in April, striking a 71-year-old employee who later died.

The Retail Smiths Principal Partner and National Jeweler columnist Peter Smith
ColumnistsAug 18, 2026
Peter Smith: The IKEA Effect and Bridal Branding

In a new column, Peter Smith posits that people actually enjoy putting together IKEA furniture, and the same is true for engagement rings.

Police car with lights on
CrimeAug 18, 2026
Thieves Snatch $1M in Jewelry From New Jersey Jeweler

9lakha Jewelers in Iselin, New Jersey, was the target of a smash-and-grab robbery on Aug. 8.

Ring Concierge x 818 Tequila Bridal Giveaway
Lab-GrownAug 18, 2026
Ring Concierge, Kendall Jenner’s Tequila Brand Collab on Giveaway

The jeweler has partnered with 818 Tequila to gift lab-grown diamond studs to a bride-to-be and their bridal party.

Louis Comfort Tiffany Poppy lampshade drawing
Events & AwardsAug 17, 2026
Exhibition on Louis Comfort Tiffany’s Studios to Open at The Met

The exhibition will feature more than 100 drawings of stained-glass lampshades, windows, and more, many created by women and émigrés.

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy