Master Diamond Cutter Mike Botha Takes on Esperanza
The Esperanza is the most valuable diamond ever mined in the US. Learn the story behind the find and the unique triolette cut designed to showcase…
The Esperanza is the most valuable diamond ever mined in the US. Learn the story behind the find and the unique triolette cut designed to showcase…
Learn everything you need to know about Ethiopian emeralds, including quality, pricing, gemology, and how they compare to those from traditional…
The Quartzsite gem shows attract gemologists and rock hounds from around the world. Learn what to expect and how to shop at these huge annual January…
Novice and expert gemologists discuss their experiences at the celebrated annual February Tucson Gem and Mineral Show. You’ll find reviews of…
New to the gem trade or just a hobbyist? Don’t be intimidated! Follow these tips for your first gem show to make the most out of the event.
IGS member Richard Edley shares his experiences discovering California turquoise and offers advice on desert prospecting.
Headed out to the opal fields? Read on to learn more about opal prospecting and mining, plus some expert tips for finding precious opal beneath your…
Visit one of the top gem hunting spots in the US. Go alone or with the family. A gemology-themed vacation can be fun, educational, and (maybe) profitable.…
As Mogok, Myanmar prepares to celebrate its 800th anniversary, the inhabitants of this prolific gem producing region face an uncertain future.…
The town of Coober Pedy, Australia produces more opal than anywhere else. Its culture has been thoroughly shaped by opal mining. Learn more about…
With rich cornflower blue Yogo sapphires and fancy-colored gems in any color of the rainbow, Montana sapphires are a great choice for any jewelry…
With over 900 vendors and numerous geologic rarities, the 2017 Denver Gem and Mineral Showcase had plenty to see. Read about some highlights in…
Colorado has a lot to offer gemologists and rock hunters. Before you visit, learn about Colorado gemstones as well as notable gem shows, museums,…
Some opals from Spencer, Idaho show asterism or the “star stone” effect. Learn how to price these beautiful but rare star opals.
Turkey’s gemstones include well-known species such as diaspore, chalcedony, and jade, as well as unusual specimens of lesser-known gems. Learn…
Agate stones typically form slowly in the cavities of ancient hardened lava flows. Learn where you can see this process occurring today.
My goal is to share with each of you the fun and folklore or gemstones. Since this is my first article for IGS, my goal is to introduce you to the difference…
Old Mine Tales that were submitted as letters to Faceter’s Digest. They are a personal history of the author’s experiences with the mines in North…
IGS Become Member