Majors

Roberto Coin Sues Dealer After Retailers Pull Jade Line

MajorsJan 04, 2019

Roberto Coin Sues Dealer After Retailers Pull Jade Line

The popular Italian brand is at odds with former partner Kings Stone over certification of the brand’s black jade jewelry.

20180125_RobertoCoin-1.jpg
Roberto Coin has filed a lawsuit against New York-based stone dealer Kings Stone regarding the latter’s claims the jeweler misrepresented certification of the black jade used in its designs. Pictured here is a cuff and huggie hoop earrings featuring black jade and diamonds in 18-karat rose gold, introduced by Roberto at the January 2018 Vicenzaoro show.

New York—Roberto Coin Inc. and Kings Stone are embroiled in a lawsuit amid allegations that the former misrepresented certification of the stones in its black jade jewelry line.

According to court documents, Roberto Coin and Kings Stone started discussions about the latter providing black jade to the jeweler in 2012, and Roberto Coin began placing significant orders shortly thereafter.

As Kings Stone began supplying black jade to Roberto Coin, it also provided certifications from China’s National Gemstone Testing Center stating the stones were amphibole jade.

Kings Stone owner Joseph Goldstein claims the company continues to be the only supplier of NGTC-certified black amphibole in the world.

In mid-2014, Roberto Coin terminated the partnership and started using a new supplier of black jade for its designs.

Goldstein said he discovered in early 2018 that Roberto Coin was still marketing the black jade line as “black amphibole jade certified by the NGTC,” despite the termination of their partnership.

He then approached multiple retailers that carry the line, asking them to verify the NGTC certification of the material, which, Goldstein claims, they could not.

Shortly after, a few major retailers, including Borsheims and Bloomingdale’s, pulled the black jade jewelry line from their showcases.

Borsheims and Macy’s Inc., which owns Bloomingdale’s, both told National Jeweler they don’t comment on pending litigation.

Following the retailers’ decision to pull the line, Roberto Coin filed a complaint against Kings Stone and Goldstein in July 2018 in the U.S. District Court for the Eastern District of New York, alleging false advertising and deceptive business practices in violation of federal and state law.

According to the complaint, Goldstein told Roberto Coin that he intended to file a consumer class action again the company for selling jewelry containing “non-authentic” black jade.

It also alleges he made “false and misleading statements” that the black jade in its jewelry was “non-authenticated” and threatened the brand’s retail customers with consumer class action if they continued to carry the line.

Roberto Coin said in its complaint that it has reports from several gemological labs certifying the black jade used in its jewelry.

When it switched suppliers in 2014, the company claims the new supplier, CaterG, provided them with an analysis from Hong Kong Gems Laboratory calling the material “natural amphibole material,” as well as additional lab analyses certifying that the material was “amphibole jade” or “black nephrite jade” (nephrite is part of the amphibole mineral group).

The new supplier also sent a sample of its black jade to NGTC in April 2018, after Goldstein started approaching the retailers, and the lab confirmed that the stones are amphibole jade, the brand said in its lawsuit.

“RCI always has conducted its business in accordance with the highest standards. It strongly disputes the claims by Joseph Goldstein and Kings Stone,” attorney Gayle Pollack of Morrison Cohen said in a statement provided to National Jeweler.

“In fact, RCI filed a lawsuit against them to stop them from continuing their false advertising campaign. Rather than try this case in the media, RCI looks forward to being vindicated in court.”

Goldstein filed a counterclaim in August 2018, alleging the jewelry brand has engaged in fraud regarding the marketing and sales of its black jade jewelry.

The claim states that Kings Stone is the only supplier of NGTC-certified black amphibole jade and that Roberto Coin misrepresented the black jade it sold. 

Goldstein also claims the NGTC has confirmed that no other suppliers have received certification for black amphibole jade prior to April 2018, when CaterG sent its material to the lab to be certified black amphibole jade, meaning any use of vocabluary around NGTC certification by Roberto Coin between the time the company terminated its relationship with Kings Stone and April 2018 would have been unlawful.

The counterclaim also notes that when Goldstein asked the retailers to provide proof of NGTC certification, they could not, instead sending a pamphlet from Roberto Coin describing the certification.

The NGTC did not respond to an email asking for clarification about the certification by press time.

Goldstein gave the following statement to National Jeweler: “In all of the legal paperwork filed, not once did Roberto Coin refute the fact that they had used the NGTC for four years straight for their black jade without it actually being certified by the NGTC.

“Roberto Coin could easily settle this allegation very simply—by just producing the NGTC certs used for four years on his black jade and the lawsuit would disappear. Instead, they continue to avoid the fraud issue itself and claim that they are above reproach due to their stellar reputation. No one is above the law—not even Roberto Coin.”

Kings Stone is seeking a permanent injunction prohibiting Roberto Coin from marketing its black jade jewelry with “false representations” that it has obtained certificates from the NGTC, “unless and until (it) has obtained NGTC certifications.”

In addition to monetary damages, Roberto Coin is seeking a permanent injunction preventing Goldstein and his company from “attacking the ‘authenticity’ of the jade” in its jewelry, and wants him to be required to provide “corrective” advertising to each of its retail customers he has contacted.
Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

Aerial image of the Lungwebungu River
SourcingOct 02, 2026
De Beers, National Geographic Society Renew Okavango Eternal Partnership

The partnership, a pledge to protect Africa’s Okavango River Basin, has been extended for an additional five years.

Hearts On Fire Dream Heart Pendant
TrendsOct 02, 2026
Hearts On Fire Celebrates 30th Anniversary With Heart Pendant

The special-edition “Dream” pendant, our Piece of the Week, was created to mark Hearts On Fire’s 30-year milestone with 30 diamonds.

Surveillance images of robbery suspects
CrimeOct 01, 2026
Police Looking for 4 Suspects in $600K Smash-and-Grab Robbery

Dubai Jewelers in Springfield, Virginia, was once again the target of an armed robbery.

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.

Rolex Oyster Perpetual Day-Date 40 in 18-karat Jubilee gold with aventurine dial
SurveysOct 01, 2026
Rolex Ranks Among Most Recommended Brands in US, Survey Says

YouGov’s 2026 U.S. Most Recommended Brands report’s out, and a fast-fashion giant is sitting at No. 1 while Rolex is just shy of the top 5.

Weekly QuizOct 01, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Peoples Training & Research Centre Gujarat India
SourcingOct 01, 2026
Columbia Gem House Opens ‘Cutting Toward Change’ Fundraiser

Proceeds from its jewelry raffle will benefit an organization working in India to combat silicosis, a lung disease affecting stone cutters.

Jason of Beverly Hills Stanley Cup Championship Ring for Carolina Hurricanes
TrendsOct 01, 2026
Carolina Hurricanes’ Championship Ring Reveals Hidden Hockey Puck Pendant

The rings, crafted by Jason of Beverly Hills, celebrate the hockey team’s Stanley Cup win with design elements that honor its traditions.

Cover.jpg
Brought to you by
Your Piece Could Be the One Editors Talk About

Submit your pieces for a chance to win in this year's competition.

Meredith Young Nebula ring
TrendsOct 01, 2026
Amanda’s Style File: October’s Color Range

This roundup of birthstone jewelry for October features vibrant tourmalines and opals with personality.

Time CEO Jessica Sibley, Botswana President Duma Boko, and Botswana Minster of Minerals and Energy Bogolo Joy Kenewendo in New York
SourcingSep 30, 2026
Botswana’s President, De Beers CEO Say Diamond Demand Is Recovering

President Duma Boko spoke at back-to-back events in the city last week, touting Botswana’s stability and the diamond “bounceback.”

Oscar Heyman A Living Archive Holiday Book
CollectionsSep 30, 2026
Oscar Heyman’s Holiday Book Is ‘A Living Archive’

The catalog showcases 112 new, one-of-a-kind pieces amid highlights from the jeweler’s historic archive.

Gemfields rubies
SourcingSep 30, 2026
Gemfields Posts $98.5M Loss, Writes Down Value of Ruby Mine

Its Montepuez Ruby Mining operation in Mozambique, which is not yielding enough high-quality rubies, has taken a $125 million hit.

Hand holding a gas pump
SurveysSep 30, 2026
Consumer Confidence Falls to 12-Year Low in September

Those surveyed were worried about the present and the future, with write-in responses mentioning high oil and gas prices.

JA New York sign
Events & AwardsSep 30, 2026
Jewelers of America, JA New York to Host Networking Event

The event will take place on the evening of Oct. 26 in New York City.

Christy Bromberg
IndependentsSep 29, 2026
Christy Bromberg, Longtime Gift Buyer for Underwood Jewelers, Dies at 68

She is remembered for her joie de vivre, upbeat personality, genuine interest in other people, and love of the Alabama Crimson Tide.

Dionne Warwick brown diamond ring from Sultan of Brunei
AuctionsSep 29, 2026
Dionne Warwick’s Jewelry Goes Up for Auction

Online bidding is open now for Julien’s sale of items owned by the “Walk On By” singer, whose final album comes out this fall.

Matt Stuller
Events & AwardsSep 29, 2026
Matt Stuller to Receive 2027 Gem Award for Lifetime Achievement

The founder and executive chairman of Stuller Inc. is being honored for his impact on the jewelry industry at the 25th annual Gem Awards.

Emmanuel Raheb, CEO of Smart Age Solutions
ColumnistsSep 29, 2026
Your Holiday Marketing Has a Bridal Blind Spot

December is the most popular month to propose, and jewelers need to keep that in mind when planning their holiday marketing.

Sandy Lerner’s 18-karat gold and diamond cat brooch
AuctionsSep 29, 2026
If You Love Cats, This Jewelry Auction Is for You

Cat ladies of the jewelry world, unite. Sandy Lerner’s collection of cat jewelry and other objects is going up for auction Wednesday.

De Beers London Vibrations high jewelry Echo transformable necklace
CollectionsSep 28, 2026
De Beers London Drops Water-Inspired High Jewelry Collection

“Vibrations” features several firsts for De Beers’ high jewelry, including the use of chalcedony and diamonds sourced from artisanal miners.

Zoë Kravitz Wearing Jessica McCormack’s Bows Collection
CollectionsSep 28, 2026
Jessica McCormack Turns to Classic Motif for New Collection

The “Bows” collection features three interpretations of the bow motif designed with Georgian and Victorian influences.

Amanda Coleman-Phelps and Guy Borenstein
Events & AwardsSep 28, 2026
Guy Borenstein, Troy Underwood Among the Professionals Honored at AGS Conclave 2026

The American Gem Society recognized industry members, one Guild, and a law enforcement official for their contributions to jewelry.

Jewelers Mutual Instappraise screenshot mock up
FinancialsSep 28, 2026
Instappraise, Jewelers Mutual Look to Simplify Jewelry Insurance

Through a new system integration, customers can now receive instant personal jewelry insurance quotes at the time of appraisal.

Rolex Datejust 31 ref. 6827 and Rolex Lady Datejust ref. 6917
WatchesSep 25, 2026
Smaller Rolex Watches Showing Strength on Secondary Market, Data Shows

Five of the 10 fastest-appreciating Rolex models on Bob’s Watches were Datejust 31 or Lady Datejust watches.

Brilliant Earth The Elizabeth Taylor Collection Campaign Imagery
Lab-GrownSep 25, 2026
Brilliant Earth Collabs with Elizabeth Taylor Estate on Jewelry Collection

“The Elizabeth Taylor Collection” uses lab-grown diamonds and gemstones in contemporary designs inspired by the icon.

Dana Rebecca Alexa Jordyn Marquise Marge hoops
TrendsSep 25, 2026
A Peek at Taylor Swift’s Game-Day Diamonds

The artist wore Dana Rebecca Designs’ marquise diamond-set gold hoops at the Chiefs game last Sunday. Now they’re our Piece of the Week.

Jewelry display
CrimeSep 24, 2026
From Conclave: Security Measures Jewelers Should Be Taking

JSA and Jewelers Mutual shared advice on spotting suspicious behavior, combatting cell phone jammers, and staying safe at home.

×

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