The 23-carat fancy vivid blue diamond, set to headline Christie’s May jewelry auction, was expected to sell for as much as $50 million.
Gem Diamonds Finds Twelfth Stone of 100+ Carats This Year
The 138-carat Type IIa diamond of “top white color” came from the Letšeng mine in Lesotho.

London—Gem Diamonds has found yet another big stone.
The diamond miner announced Wednesday the recovery of a 138-carat Type IIa diamond of “top white color” from the Letšeng mine in Lesotho, which the company says is the highest dollar-per-carat kimberlite diamond mine in the world.
The discovery marks the 12th diamond weighing more than 100 carats to be uncovered by Gem Diamonds this year, a new record for the company.
Other 100-plus carat discoveries in 2018 include an exceptional quality 910-carat, D color Type IIa diamond in January, a 169-carat diamond of “top white color” in March and a 100.5-carat Type IIa diamond from Letšeng earlier this month.
The Latest

G.B. Heron Jewelers in Salisbury, Maryland, is set to close as its owner, Jeff Cassels, retires.

Emmanuel Raheb outlines the differences between the two platforms and posits that the most successful jewelers use both.

Supplier Spotlight Sponsored by GIA

U.S. customs agents in El Paso, Texas, intercepted the package, which would have been worth $9 million if the jewelry was genuine.


Health monitors become statement pieces when paired with the brand’s new collection of stackable diamond-studded bands.

Ten organizations were selected this year.

Six new retail businesses were selected for the 2025 program, which began in January.

Kim Carpenter and Sam Gevisenheit have joined the brand.

“Shell Auranova” is the next generation of the brand’s bridal line, featuring half-bezel engagement rings with bold and fluid designs.

Boucheron and Pomellato performed well in an otherwise bleak quarter for Kering amid struggles at Gucci.

Designer Deborah Meyers created her birds from oxidized sterling silver, rose-cut diamond eyes, and Akoya Keshi pearl feathers.

Sponsored by the Gemological Institute of America

Simon Wolf shares why the time was right to open a new office here, what he looks for in a retail partner, and why he loves U.S. consumers.

A third-generation jeweler, Ginsberg worked at his family’s store, Ginsberg Jewelers, from 1948 until his retirement in 2019.

The company failed to file its quarterly reports in a timely manner.

The organization also announced its board of directors.

Charms may be tiny but with their small size comes endless layering possibilities, from bracelets to necklaces and earrings.

Located in Valenza, the now 355,000-square-foot facility includes a new jewelry school that’s open to the public, Scuola Bulgari.

Paola Sasplugas, co-founder of the Barcelona-based jewelry brand, received the Fine Jewelry Award.

A platinum Zenith-powered Daytona commissioned in the late ‘90s will headline Sotheby’s Important Watches sale in Geneva next month.

The basketball stars wear men’s jewelry from the “Curb Chain” collection.

The Signet Jewelers-owned retailer wants to encourage younger shoppers to wear fine jewelry every day, not just on special occasions.

The 21 pieces, all from a private collector, will be offered at its Magnificent Jewels auction next month.

Lilian Raji answers a question from a reader who is looking to grow her jewelry business but has a limited marketing budget.

GCAL by Sarine created the new role to sharpen the company’s focus on strategic partnerships and scalable expansion.

The Indiana jeweler has acquired Scottsdale Fine Jewelers in Scottsdale, Arizona.