The Big Ones Keep on Coming: Letšeng Recovers Two More 100+ Carat Diamonds
They did it again.
The Letšeng Diamond Mine in Lesotho has recovered two more 100+ carat diamonds — a 100.71-carat Type I faint yellow diamond...
Diamonds, Debt, and a New Deal on the Pitch
Zimbabwe’s Manica Diamonds Football Club has changed hands — and with it, perhaps, its fortunes.
According to a recent report in The Herald, the struggling...
Technology-Grade Grown Diamond – TGGD
Lab-Grown Diamonds Move Beyond Jewelry—Into Technology
Bench jewelers have known this for years: diamond handles heat. It’s one of the few gemstones you can often...
World Diamond Day Debuts—But This Time, There’s No Single Voice Leading the Charge
World Diamond Day made its debut on April 8, 2026, with a simple but ambitious idea: what happens if the diamond industry—long shaped by...
Tariff Turnaround! U.S. Supreme Court Says Tariff Authority Belongs to Congress
After reading through 170 pages of the Supreme Court’s opinion, titled: LEARNING RESOURCES, INC., v. TRUMP, PRESIDENT OF THE UNITED STATES, here is the...
Why the African Diamond Council Says the Kimberley Process Definition Is Broken
In an extensive interview with Rough&Polished, the ADC chairman Dr. M'zée Fula Ngenge argued that the Kimberley Process’s definition of “conflict diamonds” no longer...
The 1869 Patent for “New Manufacture of Artificially Formed Mineral Carbon”
In our last newsletter, we began what appears to be an ongoing series of gem-related patents dating back more than a century, uncovered and...
Spare Parts and an Eye for Antique Diamonds: A Conversation with Michael Goldstein
Antique diamonds don’t need a trend cycle to justify their appeal. Still, it doesn’t hurt when a high-profile engagement ring brings them back into...
The 1901 Patent for the Diamond Saw: It was a Revolution
April 9, 1901 - No need to grind away the top of the Octahedron
William "Bill" D. Hoefer, Jr. GG (GIA), FGA is an educator,...
In Memoriam: George Peter “Pete” Yantzer
George Peter “Pete” YantzerNovember 10, 1948 - January 10, 2026
George Peter “Pete” Yantzer, a respected gemologist and influential figure in modern diamond grading, passed...
Diamond Club West Coast Looking Ahead to Continued Growth: A Diamond Conversation with Kalpesh Jhaveri,...
The Diamond Club West Coast Closes Out 2025 and Looks Ahead to Continued Growth
More than 600 guests gathered to celebrate industry excellence, honor standout...
The Return of Jonker VI! Diamonds Take Center Stage at Sotheby’s December Sale
On December 9, at Sotheby’s new New York home in the Breuer Building, an impressive lineup of diamonds, important colored stones, and signature house...
