Sotheby’s High Jewelry: Red Diamonds, Vanderbilt Jewels, Graff, Winston, & More!
Sotheby’s June New York High Jewelry auction presents a standout selection of exceptional gemstones and important pieces from renowned collections.
Highlights include a rare 9.60-carat...
Christie’s Headliner, the 23.24-carat “Golconda Blue” Pulled
The 23.24-carat “Golconda Blue” fancy vivid blue diamond has been unexpectedly pulled from the May 14 Christie’s Magnificent Jewels sale, says Anthony DeMarco, contributing...
Sotheby’s Hong Kong High Jewelry: the Headliners Did Not Sell
On Friday April 15th, the Sotheby's Hong Kong Fine Jewelry Auction hammered out several beautiful and notable pieces to spotlight in the Roskin Gem...
The Winston Red – the Color Every Other Red Diamond Wishes it Had!
The Winston Fancy Color Diamond Collection was unveiled at the Smithsonian Institution's National Museum of Natural History on Tuesday, April 1st, with Smithsonian dignitaries...
Rio Tinto discovers exceptional yellow diamond from its Diavik Diamond Mine
Rio Tinto has unearthed one of the largest gem-quality yellow diamonds ever discovered in Canada, from its Diavik Diamond Mine.
The 158.20 carat rough diamond...
Sotheby’s Diamond Extravaganza: Showcase in Abu Dhabi
Sotheby’s hosted an exhibition in Abu Dhabi (9–10 April 2025) featuring a remarkable selection of colored diamonds, including one of the most significant blue...
The Winston Red Diamond Gets a New Home! Smithsonian’s National Museum of Natural History...
The Smithsonian’s National Museum of Natural History will unveil the 2.33 carat Winston Red Diamond along side the Winston Fancy Color Diamond Collection on Tuesday,...
Sotheby’s Geneva November Diamond Recap – Several Lessons in Color Grading
The Magnificent Jewels Sale this past November in Geneva featured quite a few fancy color diamonds, with four that really caught our attention. -...
Sotheby’s New York: Catching up from the Holidays with a few Can’t Miss Jewels!
We don’t often revisit past gem news, but the "Magnificent Jewels" auction of December 11, 2024, showcased exceptional colored diamonds, gemstones, and vintage pieces...
Magnificent Jewels: Christie’s New York – The Magnificent Blue Diamond, and Harry Winston’ Stunning...
Magnificent Jewels: Christie's New York - The Magnificent Blue Diamond, and Harry Winston' Stunning Spinels!
"Magnificent Jewels at Christie’s New York will close a...
AGA’s Tucson 2025 Conference! Speakers and Topics not to miss!
AGA's Tucson 2025 Conference! Speakers and Topics not to miss!
The Accredited Gemologists Association's full-day 2025 Tucson all-day conference features six timely gemological education sessions...
Christie’s Geneva: An Update – Magnificent Jewels Geneva: Emeralds & Natural Pearls, Sapphires &...
Christie's Geneva: An Update - Magnificent Jewels Geneva: Emeralds & Natural Pearls, Sapphires & Diamonds Top of Sale
As we reported in our last newsletter,...
