NYC Diamond Dealer Pleads Guilty to Lab-Grown Diamond Swaps
Manashe Sezanayev pleaded guilty to grand larceny and is expected to receive five years’ probation when he’s sentenced in May.

On Feb. 27, 41-year-old Manashe (Mike) Sezanayev of Queens, New York, pleaded guilty in a New York State Supreme Court to one count of grand larceny in the second degree.
Sezanayev, the owner of Rachel’s Diamonds on 47th Street in Manhattan, was indicted last July in New York State Supreme Court on two counts of second-degree grand larceny and one count of first-degree scheme to defraud, which are both felonies, as well as three counts of third-degree criminal possession of a forged instrument, a misdemeanor.
His sentencing date is May 5, according to the DA’s office.
He is expected to receive five years of probation and to make restitution in the amount of $200,000, which Manhattan DA Alvin L. Bragg Jr. said has already been paid.
When Sezanayev turned his back to the merchant to weigh the stones, he allegedly swapped them for two lab-grown stones intentionally cut to mimic the natural stones, both fraudulently inscribed with Gemological Institute of America report numbers for natural diamonds.
According to court records, the next month, Sezanayev told another diamond merchant that he had a customer looking to purchase a diamond worth around $200,000.
Sezanayev purchased a lab-grown diamond re-cut to mimic the $200,000 natural diamond he claimed to be interested in, also inscribed with a fraudulent GIA report number.
He brought the lab-grown stone to a meeting with his alleged customer and the merchant, and while evaluating the natural stone, Sezanayev made the swap.
The merchant did not realize his natural diamond had been swapped for a lab-grown diamond until later.
The DA’s office said the $200,000 diamond was returned to the victim.
“Manashe Sezanayev is facing accountability for stealing diamonds from merchants and replacing them with fake stones,” Bragg said.
“We will continue to prosecute those who take advantage of consumers and conduct business deals in a dishonest manner.”
This is the second time Sezanayev has pleaded guilty to a diamond-related crime.
In 2017, he was one of a dozen men charged with perpetrating a series of frauds that ultimately cheated diamond wholesalers out of more than $9 million in goods.
He pleaded guilty to one count of conspiracy to commit wire fraud in 2018 and was sentenced to 366 days behind bars, court records show.
According to the online database for the Federal Bureau of Prisons, Sezanayev was released from prison in December 2019.
The Latest

These customer behavior patterns say a lot about how successful your jewelry store is going to be this year, Emmanuel Raheb writes.

Mejuri’s popular collection of 18-karat yellow gold vermeil rings debuted in sterling silver alongside new “Puzzle” slider charms.

The Miami-based jewelry brand and the NYC-based artist will be in Dallas from April 9-11.

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

The initiative invites those in the industry to share stories on social media highlighting the meaning and impact of natural diamonds.


Wolk’s first day on the job as CEO of Tracr, De Beers Group’s blockchain platform, will be May 1.

Moses, who will leave the lab in May after nearly 50 years, discusses his start in the business, gemstones that stand out, and what’s next.

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

The new catalog, which showcases 35 one-of-a-kind pieces of jewelry, is a compliment to the company’s popular holiday catalog.

Production has ceased at the Canadian diamond mine, which has yielded more than 150 million carats of rough diamonds in its 23-year run.

The store opening marks the 10th United States location for the India-based jewelry retailer.

Two Saks Fifth Avenue locations, one in Florida and one in California, and one Neiman Marcus store are off the chopping block.

West, who started in the art department at the Leading Jewelers Guild in 1979, is remembered for his patience, kindness, and dedication.

In the “Tesoro” version of the ring, our Piece of the Week, each side of the gold hexagonal nugget has a unique colored gemstone design.

Cohen discusses the evolution of Citizen’s light-powered technology, the brand’s cross-generational appeal, and tariffs.

“Essentially Human: On Sales and Salespeople" reveals the underlying human traits and behaviors of the most successful sales professionals.

The collection features symbols of love, luck, and light, based on the story of Queen Cassandane and Cyrus the Great of Persia.

It’s the third scholarship to be launched as part of the partnership to help appraisers advance their professional credentials.

The deadline for entries in the jewelry design competition has been extended to April 3.

After 28 years with JCK, the veteran industry journalist is launching his own publication on Substack called The Jewelry Wire.

Wiley said the project will give scientists worldwide access to the American Museum of Natural’s History renowned mineral collection.

The “Flower Puff” collection looks to beaded flower friendship bracelets from childhood, turning the silhouette into nostalgic fine jewelry.

Set for April 2, the webinar will discuss how the jewelry industry can address the workforce gap.

Bayer, founder of Lisa Bayer Designs, is remembered as “a bright light in every room.”

The highest-grossing lot was a Tiffany & Co. ring set with a flawless, emerald-cut diamond of 10 carats.

The next three editions of AGTA GemFair Tucson will feature a five-day show that includes Sunday.

Former Sotheby’s executive Tom Heap has taken on the London-based role.























