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...
Who Wore What Jewels: 2025 Los Angeles County Museum of Arts, Art + Film...
Covering the 2025 LACMA Art + Film Gala, WhoWoreWhatJewels.com offered a detailed look at the remarkable jewels worn at this year’s fundraiser supporting the...
The Fall 2025 edition of GIA’s quarterly journal, Gems & Gemology (G&G)
GIA’s Fall Gems & Gemology is now available for free online. In this season’s issue, very rare and fascinating diamond properties bring out the...
GIA’s “NextGem” Reminder — In Time for the Holidays: Short, On-Demand Courses for New...
With the holiday season around the corner, the Gemological Institute of America (GIA) has reminded us of GIA's NextGemâ„¢, a new way for retail...
