Tom Chatham Has Written a Book About His Family
It details the family’s history and legacy in the world of lab-grown gems and is set for release at the JCK show in Las Vegas.

“The Chatham Legacy, An American Story,” is set to be released at the upcoming JCK show in Las Vegas.
The 219-page book is described as, “a look inside the true story behind the original lab-grown company,” that is a “must-read for everyone in the industry who wants to a gain a real understanding of how this category came to be.”
After experimenting with gemstone growing in the garage of his parents’ San Francisco home, chemistry-loving Carroll Chatham—Tom’s father—started Chatham Created Gems in 1938 after figuring out how to reliably produce emeralds.
“The Chatham Legacy” details these early days of experimentation, as well as the company’s battle with the Federal Trade Commission over the term “created,” a fight it ultimately won in 1963.
“Many thousands of dollars were spent to change this one little word, from ‘cultured’ to ‘created,’” Tom writes in the book. “Everyone felt relieved and positive for the future. Chatham-Created Emerald was born.”
The industry’s back-and-forth with the FTC over terminology for man-made stones continues today, from the recent revisions to the Jewelry Guides regarding terminology around lab-grown diamonds to the FTC’s current review of the “Green Guides,” which still are open for public comment.
The book also details the company’s journey to educate and try to win acceptance from the trade.
“Just to give you an idea how prehistoric the gemological world was back then, I have personal correspondences from 1947 from Richard T. Liddicoat, then president of the Gemological Institute of America (GIA), which was training jewelers to become professional gemologists, asking Carroll for any suggestions he may have on separating his emeralds from natural,” Tom states in the book.
According to the book, one of Liddicoat’s letters reads, “Since your product is so beautifully made and compares so favorably to fine natural material, we doubt that it would be possible to teach a method of identification by recognition of the differences between inclusion in your product and in natural emerald.”
After emeralds, Carroll expanded to growing rubies in 1958, alexandrite in 1972, and different varieties of sapphire beginning in 1975, among other gems.
When Tom joined the family business in 1965, he focused on creating business opportunities for the gemstones his father was growing. He writes in the book, “The courts may have given Chatham-Created Emerald its blessing, but certain sectors of the jewelry industry did not—and some never would.”
Tom will be in Las Vegas during the JCK show signing copies of his book. His company exhibits in the Plumb Club Pavilion, PC-700.
It is available in hardcover only and costs $90. In addition to Chatham, both GIA and Vancouver, British Columbia-based Branko Gem Labs will be selling copies of the book.
To pre-order or reserve a copy, call 800-222-2002 or email sales@chatham.com.
The Latest

An investigation found that the former managing director of Movado’s Dubai branch overstated and prematurely recorded sales.

The collection pays tribute to the Japanese philosophy of Ma, studying balance, stillness, and the interplay between presence and absence.

Mari Lou’s Fine Jewelry in Orland Park, a suburb of Chicago, is closing its doors.

GIA’s labs in Dubai and Hong Kong are now accepting larger diamonds in light of the “logistical challenges” presented by the new tariffs.


These earrings by Van Cleef & Arpels, featuring the same design as a pair worn by Princess Grace, are up for auction at Woolley & Wallis.

Two experts share how artificial intelligence tools can help retailers run a more efficient business.

Bench jewelers spend years honing their skills, Jewelers of America’s Certification validates their talents.

Kentaro Nishimura, who has been with the pearl company since 1997, has been promoted to president and CEO of Mikimoto America.

“America Telling Time: 150 Years of Bulova” explores the storied history of the American watchmaker.

An across-the-board tariff of 10 percent remains in place for all U.S. trading partners, except China.

Brigette Pheloung and Tania Sarin, and their mothers, star in the campaign wearing medallions they co-designed.

LeVian is remembered for her unwavering commitment to her family, community, and helping others.

The retail show is open to the public and will run July 24-27.

Editor-in-Chief Michelle Graff answers questions about how the new taxes levied on countries like India and China will impact the industry.

The new store in the upscale Iguatemi São Paulo mall is the storied brand’s first flagship in Brazil.

The pieces span from the Art Deco period to the 1970s and will go up for auction at the Paris Jewels sale later this month.

The Grammy-winning singer-songwriter, who is set to perform at Coachella this month, also debuted a curated selection from the brand.

The introductions include the Land-Dweller, Rolex’s first new model since 2012, as well as several new dials for its classic timepieces.

Cowlishaw earned a degree in horology after serving in World War II, working at one of the first Zales stores in Tulsa, Oklahoma.

Bonhams will offer the “Kat Florence Lumina” at its May 22 jewelry auction.

In March 2022, the men went into a jewelry store in Beverly Hills and smashed the display cases with sledgehammers and crowbars.

The 51 unique watches from Sotheby’s three-day sale and immersive exhibition all found buyers, with the top lot selling for $229,955.

The company has acquired Australian jewelry insurance provider Jewellers Loop.

Beau Lotto’s immersive presentation will be a blend of neuroscience, art, and entertainment.

A pink topaz Belle Époque pendant-brooch and a Victorian Egyptian Revival choker were also highlights at a recent Anderson & Garland sale.