Les os de dinosaures agatisés de l’Utah offrent une rencontre unique entre paléontologie et gemmologie. Transformés par la minéralisation, ces fossiles rares séduisent par leurs couleurs et leur histoire.

Featured in InColor issue 45, this article highlights how American gemstones are bringing fresh inspiration to the European jewelry market and industry professionals.

Tiffany Stone, with its captivating purple hues, stands out as one of the most unique gemstones from the United States. Sourced in Utah, it attracts both collectors and lapidaries for its rarity and striking appearance.

The Denver Mineral & Gems Showcase is the second-largest gathering of gem and mineral shows in the U.S. after Tucson. The fall session features 13–14 shows spread across five main venues and lasts about a dozen days : The largest and most iconic venue is the Coliseum, which hosts three of the shows at the National Western Complex. Coliseum show + National Western Complex (Denver Expo Gem Show, Denver Mineral Show, Miner's Co-op Mineral Show) : Denver Mart at the Denver Minera

The Sonora Sunset is a fascinating gemstone composed of three main minerals: chrysocolla, cuprite, and iron. This semi-precious stone displays a vibrant range of colors, from the intense blue-green of chrysocolla to the vibrant red of cuprite, with black hues of iron in between. Together, these elements create a strikingly beautiful cabochon, often called Crimson Cuprite due to the predominance of red cuprite. Origin and Discovery This spectacular gem comes from the Milpillas

Cette année, je me suis rendu pour la 4ème fois au Tucson Gem Shows. Cela a été très court, et le séjour a été plutôt intense ! Cependant, j'ai quand même pris le temps de prendre quelques photos de cet événement international incontournable.

As a devoted fan of petrified wood, I discover new patterns, new color combinations, and fascinating designs every day that I can share with collectors and jewelers. These unique stones offer endless variety, and I am delighted to share with you today some of the most remarkable specimens I have encountered during my travels around the world.

The Tucson Gem Show is a major event dedicated to colored gemstones. During my first trip in 2011, I discovered fascinating North American gems. A defining moment that sparked a lasting passion for these unique stones.

North American obsidian showcases a remarkable variety of textures and reflections. Formed from volcanic activity, these unique stones are prized for their raw beauty and creative potential in jewelry and collecting.

For hundreds of millions of years, the oceans have been home to numerous marine species, among which fossilized coral plays a significant role.

The Pow Wow Rock Show in Quartzsite, Arizona, is a key event for mineral enthusiasts. The 2020 edition once again gathered collectors and professionals around exceptional specimens.

Number 8 turquoise from Nevada is one of the most legendary American turquoises. Known for its distinctive spiderweb patterns and now depleted source, it remains highly sought after by collectors and gem enthusiasts.

Montana covellite is a striking copper mineral known for its deep blue metallic sheen. Rare and visually captivating, it is highly valued by mineral collectors and enthusiasts.

From Los Angeles to Tucson via Quartzsite, this 2022 gem road trip dives into the heart of the USA’s biggest gemstone events, blending travel, discovery, and field experience.