Roskin Gem News Report

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...

CIBJO, the World Jewellery Confederation, has issued an urgent warning to the global jewelry trade after learning that individuals are falsely claiming to represent CIBJO — or organizations allegedly...

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...

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...

When you spend your life looking at gemstones under a microscope, it’s easy to forget that they can also inspire people who don’t own a loupe. The Gemstone Arias...

Ray Hill and Dr. Clemens Swarzinger invite you to attend "Synthetic Gems #1", presented by "one of the world's leading experts on the topic, Dr. Arya Akhavan."  Sunday, January 25th7...

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...

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...

Two of Sri Lanka’s key gem trade events were once again running back-to-back in Colombo this week, giving international buyers and dealers a concentrated look at the market from...

The American Gem Trade Association has graciously shared the professional images by Jeff Mason of Jeff Mason Photography, capturing every winning entry from the 2025 AGTA Spectrum & Cutting...

The November Sotheby's High Jewelry Geneva auction put the spotlight squarely on a 10-carat Fancy Vivid Pink cushion-shape diamond known as the Glowing Rose, mounted in yellow gold and...

A Personal Note Every now and then, a jeweler sends out a photo that stops you mid-scroll. Not because it's big or flashy, but because you know what it took...

On a Personal Note:There was certainly a buzz in the room – well over 300 pieces to view, loose gems and gem-set jewelry stretched across three very long tables....

By Gary RoskinRoskin Gem News Report The American Gem Trade Association (AGTA) has just announced a major development in its tariff-reduction campaign: the United States and Thailand have reached a...

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...

The November Sotheby's High Jewelry Geneva auction put the spotlight squarely on a 10-carat Fancy Vivid Pink cushion-shape diamond known as the Glowing Rose, mounted in yellow gold and...

This holiday season, GIA is again offering complimentary next-day Diamond Grading Report and GIA Diamond Dossier® services for submissions to the New York and Carlsbad laboratories. While supplies last,...

...and you thought you were under a lot of stress. GABORONE, BOTSWANA – The GIA laboratory in Botswana recently examined an extraordinary 37.41-carat pink-and-colorless rough diamond, reportedly from the Karowe...

Rio Tinto has announced what will be its final Beyond Rareâ„¢ Tender–the third and last of its annual "Art Series." This closing chapter, titled Into the Light, brings together...

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...

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...

The headline-grabbing engagement ring–a large oval brilliant cut diamond,has been estimated by numerous "jewelry experts" to weigh between 20 and 50 caratswith a guesstimated value of up to $5"¯million!...

Mark your calendars! On August 12, 2025, you’re invited to a free and very special conversation with one of gemology’s most respected educators and leaders. Join Dr. Cigdem Lule as she...

Diamond & Colored Gemstone-set Jewelry Marks Milestones When commemorating life's big moments, we often turn to jewelry as a lasting symbol to honor and forever remember the occasion. And the...

The 2025 Cannes Film Festival gave us plenty to talk about–on screen and on the red carpet. And when it came to jewelry, there was no shortage of standout...

The New York Liberty are a professional women's basketball team based in Brooklyn, New York. Founded in 1997, they are one of the eight original franchises of the Women's...