Independents

After a Lifetime in Jewelry, Cos Altobelli Retires

IndependentsFeb 10, 2021

After a Lifetime in Jewelry, Cos Altobelli Retires

Spurred by COVID-19, the jewelry-maker, expert appraiser and author closed his Burbank, California store last year.

20210210_Cos_at_AGS_library.jpg
In 2011, the American Gem Society named its library in honor of Cos Altobelli for the years of service he dedicated to the organization. It is located at AGS headquarters in Las Vegas.
Los Angeles—Cos Altobelli, the legendary jeweler and appraiser, had a retirement plan. 

He would keep working for a couple more years then, at the spry young age of 93, call it quits and ease into a life of golf and travel. 

But, like so many others, the pandemic derailed his long-laid plans. 

He opted to close his Burbank, California jewelry store in July 2020 and head into an early—by his standards only—retirement out of concern for his health and safety. 

“It’s a peculiar virus,” he remarked in a phone interview with National Jeweler last month. “You just don’t know.”

His retirement comes after a career of jewelry design, making, repairing, appraising and consulting that spanned decades, and generations. 

Altobelli grew up in Chicago, the son of a master jewelry craftsman, Luigi Altobelli, who had learned the trade from his father, Cosimo Altobelli, in Italy. 

He was repairing clocks by age 9, watches by 13 and making gold and platinum jewelry by the time he was 17. 

Despite the family tradition, and the early practice, jewelry was not Altobelli’s first choice of career. 

He wanted to be a baseball player and, in fact, used to lie to his parents about his participation in America’s pastime.

Altobelli said he used to tell his parents he needed to stay after school to do homework when he was actually playing baseball in a Chicago city league. 

He was so good at the sport, in fact, that Altobelli said he was offered a contract with the Cincinnati Reds Double-A team but ultimately had to decline. 

His father had purchased land in Los Angeles and, he informed the family, they were moving west to open a jewelry store. 

Altobelli Jewelers opened its doors in North Hollywood in 1948.

It was in California that Altobelli began to carve out his own path in jewelry, learning more about gemstones and, later, jewelry appraisals. 

“It was very difficult living with my father because he was a genius,” he said. “I had a long way to go before I could be near his level of talent.”

He earned his graduate gemologist diploma from the Gemological Institute of America in 1949. 

He took over the family business in 1963 and, in 1969, attended his first AGS Conclave. 

It was there, he said, that he became interested in appraising, a skill that would become a lifelong passion and lead to endeavors well beyond those of your typical jewelry store owner.
Over time, Altobelli created the AGS’s Certified Gemologist Appraiser (CGA) program, which includes a practical exam, where people examine pieces of jewelry, as well as a theory exam. He became a CGA himself in 1983. 

According to AGS, it was the first formal appraisal education program in the United States. 

“There was nothing like it before,” pointed out longtime friend and fellow AGS jeweler and CGA Cathy Calhoun. “Everything he has done for AGS and its members, and me as a young gemologist, he did all this for free. He never charged. 

“I wouldn’t have even got any further in appraising if it weren’t for Cos mentoring me. I could pick up the phone at any time, with any jewelry or appraising question, and he’s on it. Day or night, you get your response.”


Altobelli pinning Bill Boyajian at AGS Conclave in 2013 when Boyajian won the Shipley Award. Altobelli said he attended 50 consecutive Conclaves, from 1969 until the last one in 2019. (There was no Conclave in 2020 due to the pandemic.)
Altobelli pinning Bill Boyajian at AGS Conclave in 2013 when Boyajian won the Shipley Award. Altobelli said he attended 50 consecutive Conclaves, from 1969 until the last one in 2019. (There was no Conclave in 2020 due to the pandemic.)

Altobelli’s appraising talents have also landed him on the speed dials—or, in this day and age, the Favorites lists—of numerous attorneys as well as the IRS.

He’s done expert witness work for the IRS, appraising donations to determine if the value has been overinflated.

Law firms have retained him to testify in court cases involving diamonds, colored gemstones and jewelry more than 100 times, he said.

The most high-profile among them: the case of Drew Brees and the colored diamonds for which the New Orleans Saints quarterback claimed he overpaid.

Brees’ attorney retained Altobelli in the case and they won, securing a $6 million judgement for the future Hall of Famer.

He also wrote the book on jewelry appraising, literally.

First published in 1981, the fourth edition of “The Practical Guide to Jewelry Appraising” just came out and is available on Amazon and through AGS.

Altobelli’s appraisal work, including his contributions to AGS, are so numerous that it’s easy to forget he also ran a jewelry store in Hollywood for decades—he counted the late Bob Hope and Clint Eastwood among his clientele—and did property work for more than 100 movies and TV shows.

For the iconic 1993 hit film “Sleepless in Seattle,” he made the little diamond necklace Meg Ryan’s character, Annie, wears throughout the movie.

For “Hook,” Steven Spielberg’s 1991 movie starring the late Robin Williams, Dustin Hoffman and Julia Roberts, Altobelli created the earrings for the pirates, the buttons for their uniforms, the engraved gauntlet Captain Hook (Hoffman) wore and more.  And he ran all over Southern California securing the pocket watches and clocks that haunted Hook.

Altobelli moved his jewelry store from North Hollywood to Burbank in 2008, and was still going into the office regularly as of last year, at the age of 90, until the pandemic hit.

“We would have let him work at least another year had COVID not occurred,” his wife, Kelly Altobelli, said. (When asked if he would still be working if Kelly hadn’t made him retire, Cos’s answer was a definitive, “yes.”)

The same can be said of his career as a skier, a hobby he gave up when he hit 90.

“I wanted to ski last year but she wouldn’t let me,” he laughed.

Altobelli with, clockwise from bottom, wife Kelly Altobelli, jeweler Georgie Gleim and jeweler Cathy Calhoun at the Laguna Seca Raceway. In addition to making jewelry, appraising jewelry and skiing, Altobelli also raced a Ferrari for seven years. He won at Laguna Seca in 1981, and retired then and there from racing.
Altobelli with, clockwise from bottom, wife Kelly Altobelli, jeweler Georgie Gleim and jeweler Cathy Calhoun at the Laguna Seca Raceway. In addition to making jewelry, appraising jewelry and skiing, Altobelli also raced a Ferrari for seven years. He won at Laguna Seca in 1981, and retired then and there from racing.

In January, Cos and Kelly relocated permanently, from L.A. to Las Vegas, where Cos said he’ll be working on his golf game and, with Kelly’s help, marketing his book.

As far as being a jeweler and appraiser, though, Cos said he is officially retired. 

He and Kelly have plans to buy a bigger SUV and embark on road trips to places like the Crater of Diamonds State Park in Arkansas and, of course, stop at some AGS stores along the way, where he’ll no doubt be a welcome, and familiar, face. 

In addition to being instrumental in creating the AGS’s CGA program in 1983, Cos has chaired the Appraisals Standards subcommittee since 1983 and continued to teach the program at Conclave through 2019. 

He also has been a frequent speaker at Guild meetings and a contributor to the recertification exam, as well as numerous other AGS publications. 

Cos received the organization’s highest honor, the Robert M. Shipley Award, in 1987, and the organization’s library at its Las Vegas headquarters bears his name. 

AGS and AGS Labs CEO Katherine Bodoh said the organization cannot thank the now-retired jeweler enough for his many contributions over the years. 

“Members of the AGS community use words like ‘legend’ and ‘icon’ to describe Cos,” she said. “The praise is well-deserved.”

Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

 Rio Grande engagement ring and band
MajorsOct 19, 2026
The Knot to Acquire Rival Wedding Planning Platform Zola

The pending acquisition is an “exciting opportunity” for wedding vendors to grow their business, said The Knot Worldwide’s CEO.

The Secret Gems Thailand
SourcingOct 19, 2026
Jewelry Design Competition Show Airs in Thailand

"The Secret Gems" features eight Thai jewelry brands paired with a team of young craftspeople who create jewelry together to win challenges.

John Hardy Modern Talisman Collection Campaign Imagery
CollectionsOct 19, 2026
John Hardy Enters the Medallion Chat With Talisman Collection

The brand’s “Modern Talisman” capsule collection introduces pendants inspired by the mythology, natural world, and spiritual ethos of Bali.

lab channel btyb 0926.png
Brought to you by
Open an Account, Get $50 Off Your First Order. No Code Needed.

Built on Relationships. Refined by Craft.

Hand holding shopping bags
SurveysOct 16, 2026
How Inflation, Gas Prices Will Affect Holiday Sales

The NRF is expecting holiday sales to increase this year, but consumers and retailers alike are facing Grinch-like headwinds.

Weekly QuizOct 15, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Christina Puchi Gemstone Earrings
CollectionsOct 16, 2026
Christina Puchi’s Earrings Hold the Universe

Our Piece of the Week gathers the planets, represented by a variety of colored gemstones, in a pair of 14-karat yellow gold earrings.

Graff USA Executive Vice President Katy Chen
MajorsOct 16, 2026
Katy Chen Appointed Executive Vice President of Graff USA

Chen, who worked at Cartier and Tiffany & Co., will lead retail sales and operations for the luxury jeweler’s 11 U.S. stores.

1872 x 1052 Gemolite.jpg
Brought to you by
Meet Gemology’s Next Generation Microscope: GIA® Gemolite® NXT Professional Edition

Experience gemstones with greater precision and comfort than ever before.

Elise & Amy Greenberg
IndependentsOct 15, 2026
Retailer Hall of Fame 2026: Amy and Elise Greenberg

For 40 years, sisters Amy and Elise Greenberg have helmed their 126-year-old family business, leading with appreciation and integrity.

The Retail Smiths Principal Partner Peter Smith
ColumnistsOct 15, 2026
Peter Smith: What Is the Culture REP?

It’s a term Smith coined and felt compelled to share following a bad experience with an aborted flight and an unfeeling flight attendant.

Stephanie Gottlieb Movado watches
WatchesOct 15, 2026
Stephanie Gottlieb’s New Movado Watches Are Made for Your Wrist Stack

Movado teamed up with the New York-based fine jewelry designer on a new collection of Movado Museum Velura watches.

Polished diamond in tweezers
SourcingOct 15, 2026
Signet Jewelers, Richemont May Join Bidder for De Beers, Report Says

The two companies are reportedly in talks to join the Global Diamond Consortium, led by former De Beers CEO Gareth Penny, as per Bloomberg.

Wolf x Marla Aaron Some of the Things Box
CollectionsOct 15, 2026
Wolf x Marla Aaron's New Jewelry Box Is for Some (Not All) of Your Things

The “Some of the Things” box follows the two larger “Everything” box designs with the look and function of antique sewing and toolboxes.

Coleman Clark and Mitchell Clark
IndependentsOct 14, 2026
Retailer Hall of Fame 2026: Coleman and Mitchell Clark

Fourth-generation jewelers Coleman and Mitchell Clark exemplify the best qualities of their predecessors: humility, modesty, and confidence.

Manual Marcial de Gomar
SourcingOct 14, 2026
Manuel Marcial de Gomar, ‘The Emerald Whisperer,’ Dies at 90

The gem hunter, whose 70-year career was defined by adventure and exploration, is remembered for his steadfast faith and sense of wonder.

Tiffany & Co.’s Blue Box Café by Daniel Boulud at South Coast Plaza
FinancialsOct 14, 2026
LVMH’s Jewelry Brands Turn in ‘Very Good’ Performance in Q3

Tiffany & Co. continued its full-scale store renovation project while Bulgari’s high jewelry collection generated “record-breaking revenue.”

Chicago Responsible Jewelry Conference 2026 Graphic
Events & AwardsOct 14, 2026
Chicago Responsible Jewelry Conference Releases 2026 Program

This year’s sessions feature leading voices from human rights, legal, and conservation organizations.

Lugano Diamonds Greenwich Connecticut store
MajorsOct 13, 2026
David Webb Owner Purchases Lugano Jewelry

The high-end jewelry retailer was sold to private investment firm Middle West Partners and a group of longtime clients.

Stephanie Gottlieb Wholesale Lab-Grown Collection
Lab-GrownOct 13, 2026
Stephanie Gottlieb Takes Lab-Grown Diamond Collection Wholesale

The jewelry designer has partnered with Sofer Jewelry to distribute her 85-piece lab-grown diamond collection.

Sean Dunn
IndependentsOct 13, 2026
Retailer Hall of Fame 2026: Sean Dunn

Dunn, this year’s Single-Store Independent inductee, is passionate about innovation and telling the story of natural diamonds.

Bulgari pink diamond
AuctionsOct 13, 2026
Christie's Geneva To Auction 'Bulgari Pink' Diamond

The 24-carat fancy intense pink diamond ring could fetch up to $18 million at the November sale.

Greenwich St. Jewelers Island Jewel candle
IndependentsOct 13, 2026
Greenwich St. Jewelers’ New Candle Smells Like Home

The “Island Jewel” candle honors New York City and Puerto Rico and raises money for the island’s water relief efforts.

TechnologyOct 13, 2026
GemFind Is a New JA Member Benefit Partner

The partnership will give JA members access to preferred pricing, exclusive benefits, technology solutions, education, and resources.

Stock image of a person holding holidays bags
SurveysOct 09, 2026
These Will Be the 10 Busiest Days for In-Store Shopping This Holiday Season

Stores should expect to see the most customers on Nov. 27, and Christmas week is expected to be hectic too, as Dec. 25 falls on a Friday.

Elisa Solomon x Serendipity 3 Frozen Hot Chocolate Charm
CollectionsOct 09, 2026
Elisa Solomon Collabs With Serendipity 3 on ‘Frozen Hot Chocolate’ Charm

The charm, our Piece of the Week, features brown diamond frozen hot chocolate topped with white diamond whipped cream and a ruby straw.

8 carat fancy blue diamond
AuctionsOct 09, 2026
8-Carat Blue Diamond Goes Unsold at UK Jewelry Auction

The top lot of Elmwood’s recent fine jewelry sale in London was a 1.84-carat, D color Tiffany & Co. solitaire diamond ring.

Ebel sport classic watch
WatchesOct 09, 2026
Movado to Sell Majority Stake in Ebel for $66.5M

The watch company agreed to sell a 95 percent interest to a group comprised of F.P. Journe, Chanel, and Swiss watch exec Pierre Jacques.

×

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