NAJA’s Winter Education Conference Returns to Tucson in 2023
The 59th Ace It event is scheduled for Jan. 29 and 30 at the Tucson Convention Center.

The 59th Ace It Winter Education Conference is scheduled for Sunday, Jan. 29 and Monday, Jan. 30 at the Tucson Convention Center.
The first day will kick off with Richard Hughes of Lotus Gemology speaking on “Jade: China’s Gift to the World,” reviewing the major sources of jade around the world, touching on its identification, and exploring the modern movement in contemporary Chinese jade carving.
Billie Hughes of Lotus Gemology and GIA’s Wim Vertriest will then present “A Canary in the Ruby Mine: Low Temperature Heat Treatment Experiments in Burmese Ruby.”
In it, the two presenters will share the latest information from their current research on low temperature heat treatment. Attendees will also get to see before-and-after photomicrographs, spectroscopy, and fluorescence results that are important in recognizing treated material.
This will be followed by gem cutter Justin Prim giving a session titled “Beauty, Value, and the Power of Gem Cutting,” exploring how to distinguish a well-cut stone from a poorly cut stone and how cutting can affect the gemstone’s final color, which plays a huge role in its final value, among other topics.
Then mineralogist and archaeogemology expert Çiğdem Lüle will speak on “The Evaluation and Interpretation of Gem Carvings,” and independent jewelry appraiser and NAJA Education Chair Deborah Finleon will discuss “Communication, Consulting, and Contracting: 3 Cs That Can Make or Break an Assignment.”
The day will close with a session from Stuller’s Guy Borenstein called “Lab-Grown Diamonds—Screening Challenges.” This presentation will discuss various aspects of screening, the common screening techniques and technologies used for separation, and each technique’s weaknesses, limitations, and blind spots.
The second day will start with the “State of the Industry—Post-COVID” by industry analyst Harold Dupuy from Stuller and follow with GIA’s Aaron Palke presenting “Demantoid Garnet: Gemology, Origin, and Treatment,” to give an overview of sources, methods for origin determination, and discussion of treatments.
Author and researcher Renee Newman will then discuss “Diamond Cuts & Qualities in Jewelry from 1300 until Now.”
This will be followed by Danusia Niklewicz of the HallMark Research Institute diving into hallmarks with “What in the World are These Marks?”
The penultimate session will be Warren Boyd from Potentate Mining updating attendees on the world of Rock Creek Montana sapphires, and finally Samantha Lloyd from Gem-A will close the day with a hands-on session about using the spectroscope.
“We really wanted this program to be extra special. After all, it’s our first in-person conference since January of 2020. In looking at program, I’d say we aimed for the ceiling but hit the stars,” said NAJA Executive Director Gail Brett Levine.
Registration is priced at $425 for NAJA members and $650 for non-members until Jan. 15. It then goes up to $525 for members and $750 for non-members.
For more information about the sessions or ways to register, visit NAJAAppraisers.com.
The Latest

Chicago police and members of the U.S. Marshals Service tracked down the 35-year-old suspect earlier this week in St. Louis.

Owners of the Ekapa Mine reportedly filed for liquidation about a week after a mudslide trapped five workers who have yet to be found.

A 10-year alliance has also begun to address the shortage of bench jewelers through scholarships, enhanced programs, and updated equipment.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

The “Splendente” collection has evolved to feature hardstone letter pendants, including our Piece of the Week, the onyx “R.”


The jewelry collection belonged to “one of society's most glamorous and beautiful women of the mid-20th century,” said the auction house.

The update came as Anglo took its third write-down on the diamond miner and marketer, which lost more than $500 million in 2025.

With refreshed branding, a new website, updated courses, and a pathway for growth, DCA is dedicated to supporting retail staff development.

Emmanuel Raheb discusses the rise of “GEO” and the importance of having well-written, quality content on your website.

Each received around four years for burglarizing a jewelry store and a coffee shop in Simi Valley, California, last May.

We asked a jewelry historian, designer, bridal director, and wedding expert what’s trending in engagement rings. Here’s what they said.

Experts from India weigh in the politics, policies, and market dynamics for diamantaires to monitor in 2026 and beyond.

Beth Gerstein discusses the vibe of the new store, what customers want when fine jewelry shopping today, and the details of “Date Night.”

Are arm bands poised to make a comeback? Has red-carpet jewelry become boring? Find out on the second episode of the “My Next Question” podcast.

The Swiss watchmaker is battling declining sales amid a rapid retail expansion, according to a Financial Times report.

The campaign celebrates Giustina Pavanello Rahaminov, the co-founder’s wife and matriarch of the family-owned brand, for her 88th birthday.

Rachel Bennett, a senior jeweler who has been with Borsheims since 2004, earned the award.

After the Supreme Court struck down the IEEPA tariffs, President Trump imposed a 10 percent tax on almost all imports via a different law.

The industry veteran, who was with The Edge Retail Academy for 14 years, joins her husband at the company he founded in 2022.

The vintage signed jewelry retailer chose Miami due to growing client demand in the city and the greater Latin American region.

Former Flight Club executive Jin Lee will bring his experience from the sneaker world to the pre-owned watch marketplace.

Sakamoto, who died in mid-January following a sudden illness, is remembered for his humility and his masterful, architectural designs.

Bulgari chose the British-Albanian singer-songwriter for her powerful and enduring voice in contemporary culture, the jeweler said.

In a 6-3 ruling, the court said the president exceeded his authority when imposing sweeping tariffs under IEEPA.

Smith encourages salespeople to ask customers questions that elicit the release of oxytocin, the brain’s “feel-good” chemical.

JVC also announced the election of five new board members.

The brooch, our Piece of the Week, shows the chromatic spectrum through a holographic coating on rock crystal.

























