Gomez’s jewelry included Tiffany & Co. drop-style earrings while Blanco stacked diamonds from Jacob & Co. on his wrist.
More Than Half of Lots Didn’t Sell at Guernsey’s Gem Auction
While most of the loose and set Colombian emeralds in the Marcial de Gomar Collection failed to sell, all of the historic coins did.

New York--A number of Colombian emeralds from the personal collection of a renowned gemstone expert failed to sell at auction Tuesday.
The Marcial de Gomar Collection went up at New York auction house Guernsey’s, comprised of a number of loose emeralds--both cut and rough--plus finished emerald jewelry.
About half of the collection was offered without a reserve price.
The emeralds in this collection come from the personal collection of Manuel Marcial de Gomar, the founder of Emeralds International LLC, who spent more than five decades in the gemstone business. This includes years working in the Muzo mines in Colombia, known to supply some of the best emeralds in the world.
The highlight of the collection, the 887-carat La Gloria--the largest Muzo rough emerald in North America, according to the auction house--didn’t sell, nor did the Marcial de Gomar star emerald, weighing 25.86 carats, according to the auction website.
Only two loose stones sold--the 12.07-carat “Heart of Muzo” for $10,000 and the 4.39-carat round “Reina del Mar” for $10,000--and two of the finished pieces--the “Conquistador” tiara made with 14.27 total carats of Muzo emeralds and diamonds, which sold for $50,000, and the “Emerald Dragon” belt buckle, featuring a 2.69-carat Colombian oval cabochon emerald and diamond accent, that went for $5,000.
Though National Jeweler reached out to the auction house for comment about the lots not selling as well as whether they would try to sell them again, Guernsey’s didn’t respond by press time.
The auction also featured historic coins, including a number found in the wreck of the Spanish ship Nuestra Señora de Atocha off the coast of Florida in 1985. Interestingly, all of those lots sold on Tuesday, though many for well below their pre-sale estimates.
In June, Guernsey’s will hold another gemstone auction--the company will put on the block the Mountain Star Ruby Collection, comprised of four star rubies weighing 342 carats total, which will be sold together as one lot.
Jarvis Wayne Messer, a self-described rock hound, found the stones in western North Carolina in 1990.
Guernsey’s President Arlan Ettinger told National Jeweler in January that the Mountain Star Ruby Collection will be offered without a minimum reserve.
The Latest

Diamond industry banking veteran Paul De Wachter will take on the role in January 2026.

Taylor Swift flaunts an Elizabeth Taylor-esque gemstone in promo for her new album, “The Life of a Showgirl.”

Its “Quantre Sand” capsule was made using a 3D sand printing technique borrowed from the automotive and aeronautics industries.


Four individuals have been charged in the “takeover-style” robbery of Heller Jewelers last month, and additional charges are expected.

“Radiance and Reverie” will showcase more than 150 jewels from Lane’s personal collection by Tiffany & Co., Cartier, and more.

With their unmatched services and low fees, reDollar.com is challenging some big names in the online consignment world.

The month’s birthstones, tourmaline and opal, complement the palette of autumn.

Smith shares the importance of looking at your company with openness and honesty to identify opportunities you may be missing.

Associate Editor Natalie Francisco visited Italy to spot jewelry trends at the September Vicenzaoro show and share her top finds.

Respondents were concerned about job availability and rising prices.

Its latest interim financials revealed a challenging first half due in part to production troubles at its mines.

Alexander Lacik has led Pandora since 2019. Berta de Pablos-Barbier will succeed him, the first woman to head the company.

Two men allegedly used counterfeit bills to purchase luxury watches and jewelry from a North Carolina jeweler.

The “Lovestruck” collection, designed with the Academy and Grammy award-winning siblings, is the brand’s first lab-grown diamond offering.

The brand, celebrating its 15th anniversary, has popped up at Market, a luxury fashion destination in Highland Park Village.

She was remembered as a creative and generous woman of faith, who also had a sweet tooth.

Move over neck mess, the ear story is the way to make a layering statement today.

The New York-based brand is set to launch a limited-time offering for the holiday season at Holt Renfrew in Toronto.

The “Volume 7” bridal catalog features best-selling engagement rings, trending styles, and a new section highlighting anniversary bands.

Holiday sales growth is expected to slow as consumers grapple with inflation and tariff-related uncertainty.

Jamie Turner Designs is among the winners of the local “Austin Shines” contest, hosted by Eliza Page, a jewelry store in Austin, Texas.

The red and azure colorway is one of many fun enamel pairings offered, bringing whimsy to the classic style of a monogramed signet ring.

A trade deal with Switzerland seems probable, but reaching an agreement with India remains a challenge, David Bonaparte said.

Botswana’s president said his country wants a controlling share, while Angola envisions multiple countries holding minority stakes.

The manufacturer is adding 1,400 chemical vapor deposition (CVD) reactors to its growing facility in India.