Signet will integrate the online-only, natural diamond-focused jeweler into Blue Nile, which it wants to position as a higher-end retailer.
121-Carat Rough Diamond From Cullinan Goes for $6 Million
Petra Diamonds Limited announced that the white diamond, recovered in South Africa last month, garnered $49,480 per carat during its June sales process.

Johannesburg--The most recent large diamond find from South Africa’s Cullinan mine, a 121-carat rough recovered in June, has sold.
Petra Diamonds Limited announced that the white diamond went for $6 million, or $49,480 per carat, during the company’s June sales process.
The rock was purchased by diamond manufacturers Nemesis International and Golden Yellow Diamonds in a joint venture. Both companies specialize in large diamonds.
The sale comes in the wake of last week’s failed Sotheby’s auction of a 1,109-carat rough diamond found at Lucara Diamond Corp.’s Karowe mine in Botswana.
Called “Lesedi la Rona,” it was the second-largest rough diamond ever found.
Lucara chose to sell the Lesedi la Rona at a public auction, instead of a normal tender within the diamond market, to ascertain whether buyers would be interested in a rough diamond as a collectable, similar to high-value art.
Bidding for the stone failed to meet its reserve.
Lucara had better luck with its 812.77-carat rough diamond, also mined from Karowe, named “The Constellation,” which sold in a traditional diamond-industry-only tender for $63.1 million, or $77,649 per carat, in May.
The Constellation also sold to Nemesis International, one of the buyers of the 121-carat Cullinan rough diamond.
The Latest

These up-and-coming jewelry brands are bringing their distinct aesthetic and unique point-of-view to the Design Atelier for the first time.

The lab’s proprietary diamond cut grade has been expanded to include the popular fancy shape.

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

This year, it’s what could happen outside of show hours that worries JSA Executive Vice President Scott Guginsky.


High-end fashion houses know how to emotionally connect with customers online. Retail jewelers should take note, Emmanuel Raheb writes.

The designers are the third cohort of mentees from the show’s Belonging @ Couture mentorship program.

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

Buying discipline at trade shows starts with clarity about your inventory levels, Smith writes.

The trade show’s education series returns, with sessions on retail trends, AI, watches, marketing, corporate responsibility, and more.

The Curated Designer Project has expanded to highlight eight independent jewelry designers during CBG’s Las Vegas show.

Bring a cool tone to your summer jewelry with these white metal pieces.

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

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.

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

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

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

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

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

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

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

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.

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

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.

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

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

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



























