Roskin Gem News Report

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 centralized messaging from De Beers,...

Veteran jewelry industry journalist Rob Bates has (mostly) stepped away from his long-standing role at JCK Magazine to launch an independent publication, The Jewelry Wire, a Substack-based newsletter delivering...

Set along the coast of Monterey Bay, the city of Monterey provides a fitting backdrop for a gathering centered on jade. Known for its rugged shoreline, the scenic 17-Mile...

The German Gemmological Association will host its 2026 conference on April 18–19 in Idar-Oberstein, with a full weekend program dedicated to pearls and cultured pearls—combining historical perspective, laboratory science,...

The Twentieth Sinkankas Symposium will take place April 25, 2026, at GIA’s world headquarters and Robert Mouawad Campus in Carlsbad, California, bringing together a full day of presentations on...

The American Gem Society will host Confluence 2026 online on April 22, 2026. The half-day program brings together industry experts to deliver practical insight—without pulling professionals away from their...

A first-hand look at the Tucson Gem & Mineral Shows—and the stones that might spark your next jewelry design or inventory idea. Why Tucson? Tucson is, by far, the largest...

A first-hand look at the Tucson Gem & Mineral Shows—and the stones that might spark your next jewelry design or inventory idea. Why Tucson? Tucson is, by far, the largest...

Here's another amazing image from Sammantha ... But before you read the description, just look at this picture. What do you think it is? Or... what kind of lighting did she...

AGTA's DYNAMIC Seminar with Dr. James Shigley, Dr. Aaron Palke, and Wim VertriestGIA's Team Discusses What it Takes to offer a Country of Origin Report Three blue sapphires sit on...

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 clear takeaway: the Court says...

It was the second day of the AGTA’s Tucson GemFair — and the opening day of the DYNAMIC Seminar Series. As tradition would have it, Stuart Robertson, president of Gemworld...

The stunning photomicrographs (images taken using magnification to see details in or on gem materials) are simply amazing. And here is another one for you, a trapiche-like amethyst with syngenetic...

The American Gem Trade Association (AGTA) and Stuller have announced a partnership that brings responsibly sourced colored gemstones from AGTA member vendors directly into Stuller’s global supply chain. According to...

For generations, gemologists and jewelers have been taught a simple rule: chromium makes red gems beautiful. It is the element behind the glow of fine ruby, the vivid color...

Over the past few years, the Roskin Gem News Report has followed Pakistan’s slow but deliberate push to modernize its gemstone sector. The newest government reports (here, here, and...

Discovered in Madagascar in the late 1990s, pezzottaite was initially mistaken for pink tourmaline or morganite (pink beryl) before laboratory testing revealed it to be something else entirely. Further...

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 leave in place during a...

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 centralized messaging from De Beers,...

Veteran jewelry industry journalist Rob Bates has (mostly) stepped away from his long-standing role at JCK Magazine to launch an independent publication, The Jewelry Wire, a Substack-based newsletter delivering...

Scott Sucher has been recreating historic diamonds for decades. Long before grown diamond was available in meaningful sizes, Scott Sucher was cutting precise replicas of stones like the Koh-i-Noor, the...

Here we have a 0.25 ct. round brilliant cut diamond with an extraordinary garnet crystal. Melissa not only captures the crystal beautifully, she manages to get some of the...

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 reflects the realities facing African...

Held live online on January 8, London's Furlong Auction House presented a wide-ranging Collectables & Memorabilia Sale, 262 lots total, of which many included global diamond-trade artefacts, as well...

George Peter “Pete” YantzerNovember 10, 1948 - January 10, 2026 George Peter “Pete” Yantzer, a respected gemologist and influential figure in modern diamond grading, passed away this past week following...

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 members, and mark an exciting...

Over the years, we’ve published numerous feature stories focused on artisanal gem mining and the people behind it. We support responsible artisanal miners who work to bring their goods...

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 public eye. Taylor Swift’s...

April 9, 1901 - No need to grind away the top of the Octahedron William "Bill" D. Hoefer, Jr. GG (GIA), FGA is an educator, and an expert in appraisal...

When this medieval gold ring first appeared in English-language news coverage earlier this month, it was already a really good story. Three outlets — Archaeology Magazine, Medievalists.net, and Popular Science...

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 creations went on sale —...

Over One Month Later... What the Gem Industry Needs to Know It has now been over a month since four men, disguised as construction workers, bright orange vests and all,...

by Brecken Branstrator, GIA GG, Editor-in-Chief, GemGuide. Estate jewelry is one of the hottest categories in the market right now — offering not only a way to capture new customers,...

Christie's once again brought its Magnificent Jewels sale to Geneva this past week, following its May auction that brought in more than $72 million. This past week's sale brought...

Sotheby's Royal & Noble Jewels sale in Geneva on Wednesday, November 12, 2025, brought together treasures that showcased both exceptional craftsmanship and the deep, layered histories of the families...

NEW YORK – For decades, Marcus & Co. has been one of those elusive names in American jewelry history: admired by connoisseurs, but shrouded in mystery. That's changing, thanks...

In our last report on Heritage Auctions' September 29 Fall Fine Jewelry Signature® Sale, we focused on a few beautiful pieces of colored gemstone jewels; four loose gems, including...

The Los Angeles Dodgers—a Major League Baseball team based in Los Angeles, California—celebrate their 2025 World Series victory with a ring by Jostens featuring natural diamonds, blue sapphires, and...

A new gemological laboratory is entering the market—but this time, the headline isn’t just who is behind it.It’s how they’re choosing to present it. Swiss International Gemlab (SIG), founded by...

When Hollywood’s awards season rolls out, most of the attention goes to the gowns. But if you’re in the jewelry business, that’s not where you’re looking. You’re looking at...

The BAFTA Awards — presented by the British Academy of Film and Television Arts — returned with what has become a predictable constant: diamonds. And there were LOTS of...

In our world, when someone says gold, silver, or platinum, we instinctively ask:What karat? What fineness? What weight? In another world — the Olympic world — when they say gold,...

Who Wore What JewelsJanuary 14, 2026 by Lauralee Best Jewelry Moments from the Men at the 2026 Golden Globes At the 2026 Golden Globes, the most interesting jewelry moments weren’t limited to the...

Who Wore What JewelsJanuary 14, 2026 by Lauralee Best Jewelry Moments from the Women at the 2026 Golden Globes The 2026 Golden Globes Red Carpet delivered no shortage of sparkle, but the most...

We’re big fans of Lauralee’s red carpet gem parade at WhoWoreWhatJewels.com, so this week we dipped into her coverage of the 2026 Critics Choice Awards to see what the...

As the year comes to a close, the Roskin Gem News Report is proud to present the Top 25 most-read stories of 2025. According to our online magazine analytics, with...

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 Los Angeles County Museum of...