Sponsored by Clientbook
Mitchell Portnoy, Pres. of NY Mineralogical Club, Dies
He helped build a thriving club and was known for his generosity.
New York—Mitchell Portnoy, longtime president of the New York Mineralogical Club, died Oct. 15 after battling cancer. He was 63 years old.
Portnoy was a club member for 25 years, its bulletin editor for 20 and its president for about 15, during which time he built a thriving organization.
According to an online memorial to Portnoy, he was committed to science education and gemology’s relevance to the wider geosciences, an emphasis reflected in his profound Mineralogical Club involvement and the regular bulletins he put together.
He organized the club’s archives to make them more easily accessible for future generations and took pleasure in designing its note cards and posters, with graphic artistry being one of his strengths.
“In truth, he made himself available to anyone and everyone. He was a very warm, kind-hearted and gifted man,” the club said in an email.
Beyond the world of gems and minerals, Portnoy also liked movies, music, collecting stamps, the Yankees and art history.
And, though he was one of a select few tasked with deciding which graphic art posters hung in New York City’s subway trains and elevators, he preferred to ride his bicycle to get around the city.
“It is hard to appreciate how wide a net was cast by this one man,” the club said. “He will be sorely missed.
“Everything about him, from his special hand-crafted gifts of appreciation for our speakers, mineral locality games, all the way to his sing-along songs played before our club lectures, made him special to us. His generosity made him special to many, many others.”
The Latest


It will classify lab-grown stones into one of two categories, “premium” or “standard,” in lieu of giving specific color and clarity grades.

President Duma Boko addressed the country’s medical supply chain crisis in a recent televised address.

Jewelers of America is leading the charge to protect the industry amidst rising economic threats.

Former Free People buyer Afton Robertson-Kanne recently joined the retailer.


The singer’s new bling, reportedly a natural old mine-cut diamond, is no paper ring.

Dubbed the “Imboo,” or “buffalo,” emerald, the rough gemstone is part of Gemfields’ latest emerald auction, which is taking place now.

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

Plans for dining out, booking vacations, and buying big-ticket items were down.

The “Play” collection centers on nostalgic toys that have kinetic elements to carry playfulness and wonder into adulthood.

Designer Christina Puchi, the creative force behind CCWW Designs, has created charms and pendants based on iconic candies and crackers.

The Jonas Brothers star showed off new timepieces against the backdrop of his favorite spots in his home state of New Jersey.

In his latest column, Emmanuel Raheb shares tips for encouraging customers to treat themselves to new jewelry.

The new stand-alone Rolex boutique is housed in the former Odd Fellows Hall, a landmark built in 1897.

The Brilliant Earth ambassador co-designed a diamond medallion featuring meaningful symbols.

Wrap jewelry is more than just a trend; it’s the perfect motif for the coming season of layering, scarves, and pumpkin spice.

The three-day watch collector show, coming this October, will feature 44 exhibiting brands, as well as a new dinner experience.

Sriram “Ram” Natarajan is now GIA’s senior vice president of laboratory operations and is based out of the lab’s headquarters in Carlsbad.

The one-of-a-kind collar represents the beauty of imperfection and the strength to rebuild.

Three C-suite executives, including former CEO Tom Nolan, have resigned as part of what the company describes as a “transition.”

The retailer, which recently filed Chapter 11, inked a deal to sell its North American business and intellectual property.

Target CEO Brian Cornell will step down in February and be replaced by the company’s chief operating officer, Michael Fiddelke.

The group met with the president's senior trade advisor earlier this week to express the industry’s concerns about the effects of tariffs.

The pop-up will display this year's Tiffany & Co. Singles Championship trophies along with a diamond-encrusted tennis racket and ball.

The New Hampshire-based store has expanded to Boston, propelled by the success of Alex Bellman’s TikTok page, “The Truthful Jeweler.”

The latest incident happened Monday at a store in Oakland, California, continuing a pattern JSA first warned about last month.

The new aqua green New York Harbor Limited Edition II is the watchmaker’s second collaboration with the Billion Oyster Project.