Sotheby’s Is Offering 2 Diamonds Weighing More Than 100 Carats
“The Juno Diamond” and “The Earth Star” lead the June 16 Magnificent Jewels auction.

“The Juno Diamond” is a Type IIa, 101.41-carat, D-color, internally flawless pear-shaped diamond. Sotheby’s estimates it will sell for more than $10 million.
From “an important private collection,” according to Sotheby’s, The Juno Diamond is named for the Roman goddess of light and fertility.
Only 11 diamonds weighing over 100 carats have hit the auction block, Sotheby’s said, and it has sold seven of them.
Recently, “The Rock,” a 228-carat diamond, garnered nearly $22 million at Christie’s Geneva. It ranks as the fifth most expensive white or colorless diamond to sell at auction.
The most expensive was “The Art of De Grisogono, Creation I,” which earned $33.7 million at Christie’s Geneva in 2017. That stone weighed 163.41 carats.
Not content to be upstaged by the colorless stone, Sotheby’s is also offering a fancy deep orange-brown diamond with a unique setting.
Weighing 111.59 carats, the auction house said “The Earth Star” is the second-largest cut and polished brown diamond to come to auction, and one of only three such stones weighing over 100 carats to ever go up on the block.

The stone made an appearance in the 1968 tome “Famous Diamonds” by Lord Ian Balfour.
The rough version—weighing 248 carats—was discovered the year before in South Africa at the Jagersfontein mine.
Jagersfontein wasn’t known to produce brown diamonds or diamonds of that size. The stone came from 2,500 feet below the surface, deeper than is typical for such a large diamond.
The Baumgold brothers in New York cut and polished the stone into its current pear shape and named it The Earth Star for its brilliance.
In 1983, it sold for close to $1 million and has remained in private ownership until now.
Sotheby’s is offering the diamond without reserve, estimating it will sell for between $1.5 million and $2.5 million.
It is the largest diamond the David Webb workshop in New York City has ever mounted. The company set it into a pendant with azurmalachite, diamonds, and gold, emphasizing its origin beneath the Earth’s surface.

The Sotheby’s New York Magnificent Jewels sale is set for June 16.
Other highlights include a Type IIa, 26.06-carat diamond, D-color, VVS1 clarity, emerald-cut diamond set in a ring by Kwiat ($2 million-$3 million); a pair of sapphire and diamond ear clips; ($2 million-$3 million); and a Cartier emerald and diamond necklace ($1.5 million-$2.5 million).
All lots are available for viewing online.
The Latest

The retailer has raised its guidance after seeing total sales increase 3 percent in the second quarter, beating expectations.

Niccolò Rossi di Montelera, executive chairman of the board, was appointed as interim CEO.

The three-floor space also features the jeweler’s largest VIP salon in Japan and offers an exclusive diamond pendant.

Jewelers of America is leading the charge to protect the industry amidst rising economic threats.

The collection is a collaboration between Stephanie Gottlieb Fine Jewelry and Oak and Luna, focusing on understated essentials.


CEO Efraim Grinberg noted a resurgence in the fashion watch market.

The “Bullseye” necklace, with vintage bakelite and peridot, August’s birthstone, is the perfect transitional piece as summer turns to fall.

As a leading global jewelry supplier, Rio Grande is rapidly expanding and developing new solutions to meet the needs of jewelers worldwide.

Sponsored by Clientbook

It will classify lab-grown stones into one of two categories, “premium” or “standard,” in lieu of giving specific color and clarity grades.

President Duma Boko addressed the country’s medical supply chain crisis in a recent televised address.

Former Free People buyer Afton Robertson-Kanne recently joined the retailer.

The jeweler teamed up with two local organizations for its inaugural “Back to School and Bling” event.

The singer’s new bling, reportedly a natural old mine-cut diamond, is no paper ring.

Dubbed the “Imboo,” or “buffalo,” emerald, the rough gemstone is part of Gemfields’ latest emerald auction, which is taking place now.

Plans for dining out, booking vacations, and buying big-ticket items were down.

The “Play” collection centers on nostalgic toys that have kinetic elements to carry playfulness and wonder into adulthood.

Designer Christina Puchi, the creative force behind CCWW Designs, has created charms and pendants based on iconic candies and crackers.

The Jonas Brothers star showed off new timepieces against the backdrop of his favorite spots in his home state of New Jersey.

The family-owned jeweler in Fayetteville, North Carolina, is in the hands of the second generation.

In his latest column, Emmanuel Raheb shares tips for encouraging customers to treat themselves to new jewelry.

The new stand-alone Rolex boutique is housed in the former Odd Fellows Hall, a landmark built in 1897.

The Brilliant Earth ambassador co-designed a diamond medallion featuring meaningful symbols.

Wrap jewelry is more than just a trend; it’s the perfect motif for the coming season of layering, scarves, and pumpkin spice.

The three-day watch collector show, coming this October, will feature 44 exhibiting brands, as well as a new dinner experience.

Sriram “Ram” Natarajan is now GIA’s senior vice president of laboratory operations and is based out of the lab’s headquarters in Carlsbad.

The one-of-a-kind collar represents the beauty of imperfection and the strength to rebuild.