Grading

IGI Set to Go Public Next Week

GradingDec 11, 2024

IGI Set to Go Public Next Week

In a CNBC interview, CEO Tehmasp Printer discussed the IPO in India and what declining lab-grown diamond prices mean for the company.

Grader looking into microscope at IGI lab
The International Gemological Institute is set to begin trading in India on Dec. 20, looking to raise nearly $500 million through an initial public offering.
New York—The International Gemological Institute is one step closer to becoming a public company.

The company filed for an initial public offering (IPO) in India on Aug. 22 and is now looking to raise 42.25 billion rupees ($497 million), an increase from its initial goal of 40 billion rupees ($477 million).

IGI is expected to begin trading on Dec. 20, with IPO bids open from Dec. 13 through Dec. 17, according to a red herring prospectus filed Dec. 6.

The price ranges from 397 to 417 rupees per share with a lot size of 35 shares.

The stock would be listed on the National Stock Exchange of India and the Bombay Stock Exchange.

Private equity giant Blackstone acquired IGI in May 2023 from a subsidiary of Chinese conglomerate Fosun and former CEO Roland Lorie, paying nearly $570 million for the lab.

Blackstone had been seeking a valuation of $1.5 billion, per a Reuters report, but was in talks to take the lab as high as $3.5 billion.

This proposed IPO values IGI at around $2.1 billion.

In an interview with CNBC, IGI CEO Tehmasp Printer shared more details about the upcoming IPO.

Following the IPO, Blackstone would go from holding a 100 percent stake in the lab to having a 76 percent stake, he said.

“We are very happy to have Blackstone support us,” he said. “I believe Blackstone is committed for the next 10 years, which could also possibly be extended.”

The net proceeds from the IPO will be used for general corporate purposes and to acquire the remaining outstanding shares of IGI Belgium Group and IGI Netherlands Group from Blackstone.

“Today, we are in consolidation mode. We have taken the lead on lab-grown diamonds and we want to make IGI a global entity,” said Printer.

 Related stories will be right here … 

In the prospectus, IGI highlighted its position as the second-largest independent grading and accreditation services provider in the world, after the Gemological Institute of America, for loose stones and jewelry.

Founded by the Lorie family in Antwerp in 1975, IGI now operates 31 laboratories and 18 education facilities in diamond and jewelry centers around the world.

IGI’s share of the overall grading report market is around 33 percent, said Printer, including 20 percent natural and 13 percent lab-grown diamonds.

In India, IGI is the largest provider of these services, holding 50 percent market share, said the prospectus.

The rise in popularity of lab-grown diamonds has been partly behind its success, though its practices regarding the stones have raised some eyebrows in the industry.

As first reported by JCKOnline.com, IGI disclosed in its draft prospectus filed in August that a lot of its lab-grown diamond grading is done in the factories of the companies growing the diamonds. 

IGI gemologists, as well as employees of the diamond companies, do the grading and the diamond companies supply the equipment, a setup that, IGI acknowledged, comes with risks. 

“As certification via our in-factory and mobile laboratory setups are conducted on the premises of our customers, we may also have less oversight over third parties who have access to our customers’ premises,” the lab said in its August prospectus.  

“While we conduct quality checks and periodic calibration of our gemologists to reassess and adjust their grading techniques, such measures may not be effective in preventing all instances of grading errors or fraud by gemologists or third parties.” 

Printer was not asked about this during the CNBC interview but did discuss the growth in consumer demand for lab-grown diamonds and their falling prices.

“Our growth rate has been immense where lab-growns are concerned,” he said on CNBC. “It’s the new-age diamond. It’s the new kid on the block and we are sitting on the top of it.”

The company also benefits from “economies of scale” when grading lab-grown diamonds, he said, meaning that as the company grades more lab-grown diamonds the cost to do so decreases.

Regarding the sustainability of this revenue growth, Printer said it is sustainable due in part to the affordability of lab-grown diamonds, which has contributed to the market size “increasing rapidly,” and caught the attention of millennials and Gen Z.

Though the market size may be increasing, the declining value of lab-grown diamonds has been a cause for concern in the industry.

The decline in prices should not hurt its margins, he said, adding that prices have been stable for the last nine months or so, now at $200 to $250 per carat wholesale.

“Lab-grown manufacturers and polishers have huge [capital expenditures] and [operational expenditures]. Today, the price has stabilized to a level where I don’t think they can go any lower. Then, it becomes unsustainable,” he said.

The Latest

Shot of attendees at a JA New York jewelry trade show
Events & AwardsMay 22, 2026
Instore Buys JA New York Show

The deal closed this week, which means Instore will produce the JA NY show slated to take place this fall.

Buccellati Waikiki gold and diamond earrings
FinancialsMay 22, 2026
Richemont’s Jewelry Brands Lead the Charge in Q4

The company’s jewelry sales were up in Q4 and the fiscal year, with Richemont raising prices in part because of the cost of gold.

Leigh Maxwell Bauble Earrings
CollectionsMay 22, 2026
Leigh Maxwell Celebrates 5 Years at Couture With ‘Bauble’ Collection

The “Bauble” capsule collection of colorful one-of-a-kinds includes our Piece of the Week, the “Bauble” earrings, featuring rose zircon.

PG-05-SHOT-2-LUCIDA.033 1.png
Brought to you by
All Eyes on Gold Prices. Alternatives to Look For. And What to BEWARE of in Vegas

As gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.

Stuller 2026-2027 packaging and display catalog
MajorsMay 22, 2026
Stuller’s New Packaging, Display Catalog Is Out

The updated catalog has a newly dedicated section for gift wrapping.

Weekly QuizMay 21, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
My Next Question, Episode 5: Amanda Gizzi, Michelle Graff, Frank Everett
PodcastsMay 21, 2026
Episode 5: Sotheby’s Frank Everett Puts the Auction Market in Perspective

Everett covers colored stones’ surging popularity, the mellow return of the “Mellon Blue,” and his “The Devil Wears Prada” doppelgänger.

Springer’s Jewelers new flagship rendering
IndependentsMay 21, 2026
Springer’s Jewelers’ New Flagship Will Serve Next-Gen Luxury Shoppers

Fourth-generation CEO Lilly Mullen wants to emphasize experience, connection, and personalized service.

1872x1052-NextGem-2026-National-Jeweler-Advertorial.jpg
Brought to you by
How Modern Training Is Becoming a Competitive Advantage for Jewelry Retailers

With the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.

Nina Pugliese
Events & AwardsMay 21, 2026
JA Announces Nina Pugliese Memorial Scholarship

The new award, created in partnership with Henne Jewelers, honors the late designer’s legacy through supporting jewelry education.

WFDB International Summit
SourcingMay 21, 2026
Botswana, Angola Join WFDB

The addition of the diamond-producing countries as nation affiliated members broadens the federation’s global representation, WFDB said.

Jewelry scam flyer and police officer handing flyer to elderly man
CrimeMay 20, 2026
NYPD Warns of Jewelry Swap Scams Targeting Seniors

The NYPD is warning elderly New Yorkers to keep their jewelry hidden when walking outside to avoid being a target.

New Adornment & Theory jewelry store in West Town, Chicago
IndependentsMay 20, 2026
Adornment & Theory’s New Store Feels Like Home

Designer Viviana Langhoff has realized her dream of owning a space for her Chicago jewelry store that looks and feels like her brand.

Couture Show Logo
Events & AwardsMay 20, 2026
Here Is Couture’s 2026 Education Lineup

The sessions will run from Friday, May 29, to Sunday, May 31, with one being a live taping of an episode of Couture’s podcast.

Morgan P. Richardson
Lab-GrownMay 20, 2026
Savannah Friedkin Jewelry Names New CEO

Former Stephanie Gottlieb Fine Jewelry executive Morgan P. Richardson is joining the lab-grown diamond jewelry brand.

Audemars Piguet x Swatch white Royal Pop watch
WatchesMay 19, 2026
Here’s the AP x Swatch Pocket Watch That Caused Pandemonium

The $400 pocket watch is a blend of Audemars Piguet’s iconic eight-sided Royal Oak and Swatch’s unserious Pop watches from the ‘80s.

Chris Ploof Modern Electrum Collection Milgrain Rows and Diamonds Ring
CollectionsMay 19, 2026
Chris Ploof’s New Collection Makes an Ancient Metal Modern

With gold prices on the rise, the “Modern Electrum” collection uses an alternative, non-tarnishing metal alloy composed of gold and silver.

Ellen and Michael Fruchtman
IndependentsMay 19, 2026
Ellen and Michael Fruchtman Retire, Sell Marketing Agency

Fruchtman Marketing has new owners, Erin Moyer-Carballea and Manuel Carballea, and will relocate to Miami.

Peter Smith and National Jeweler contributor
ColumnistsMay 19, 2026
Peter Smith: The (Mostly) Immutable Sales Truths

In a column for the 2026 State of the Majors issue, Smith lists 10 time-tested principles about sales that still ring true.

Edahn Golan, Tenoris co-founder and National Jeweler contributor
ColumnistsMay 18, 2026
Edahn Golan: What a K-Shaped Economy Means for Fine Jewelry

In a column for the 2026 State of the Majors issue, Golan spells out how the growing economic divide in the U.S. is reshaping the market.

Foundrae Limitless Expansion of Joy and Hope Collection Campaign Imagery
CollectionsMay 18, 2026
Foundrae’s New Collection Taps Into Joy

The “Limitless Expansion of Joy and Hope” collection evokes summer through colored gemstones and motifs of butterflies and florals.

Inchiquin emerald
CollectionsMay 18, 2026
Hancocks London Acquires Historic ‘Inchiquin’ Emerald

The jewel, circa 1890, is from the late Victorian era and was owned by descendants of the last high king of Ireland.

JCK Industry Fund Logo
Events & AwardsMay 18, 2026
Here Are the 2026 JCK Industry Fund Grant Recipients

This is what the nine recipients plan to do with the funds.

John Wayne Signet Ring
AuctionsMay 15, 2026
American Collector Ponies Up Almost $17K for John Wayne’s Ring

The Western star’s 14-karat gold signet ring sold for six times its low estimate following a bidding war at U.K. auction house Elmwood’s.

MJSA Education Foundation and Jewelers of America
Events & AwardsMay 15, 2026
JA, MJSA To Sponsor Roundtable at TJS

The discussion, "Rebuilding the Jewelry Workforce," will take place on Saturday, May 16, in Troy, Michigan.

Three gold rings set with yellow- and brown-hued diamonds
SourcingMay 15, 2026
State of Diamonds: The Way Forward for Natural Diamonds

The jewelry industry is reassessing its positioning as Gen Z reshapes the retail landscape and lab grown continues to gain market share.

Matching pair of Type IIa, D-color diamonds
AuctionsMay 14, 2026
White Diamonds Lead Sotheby’s Auction, Blue Diamond Does Not Sell

A matching pair of 18.38-carat, D-color diamonds from Botswana’s Jwaneng mine sold for $3.3 million, the top lot of the jewelry auction.

DeBeeers_Bridal_Display_Dune_1872x1052.jpg
Supplier BulletinMay 14, 2026
A Diamond Is Forever Continues Desert Diamonds – Bridal Reinvigorated

Sponsored by A Diamond Is Forever

×

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