Cutting Star and Cat’s Eye Gems
Learn how to cut star and cat’s eye gems. Once you understand how asterism and chatoyancy work, you’ll find unexpected treasures in overlooked…
Custom Gem Faceting Styles
Gem cutters can choose from many faceting styles. Learn about the most common custom cutting techniques and pick one that suits your needs and skill…
How to Score Polishing Laps
Most gem cutters prefer using scored polishing laps. They work better and faster than non-scored laps. Learn how to score and break in your lap.…
How to Correct Faceting Mistakes
Faceting mistakes can cost gem cutters time and money. Learn some techniques for fixing common errors and making your repairs look like intentional…
How to Grade Set Gemstones
Gems in jewelry settings can’t be evaluated the same way as loose stones. These guidelines are for gemologists learning to grade set gemstones.…
Take the Birthstone Quiz
What do you know about birthstones? Take our short birthstone quiz and learn about the makeup, cutting, and value of these popular gemstones.
Best Rough Gemstones for Beginning Faceting
Learn which rough gemstones are ideal for beginning faceting practice. A progression of relatively inexpensive gem species can teach important…
How to Start a Gem Collection
Although many gem enthusiasts want to become collectors, they may not know where to begin. Read this article for tips on how to start a gem collection.…
Why Choose a Barion Cut?
Gem faceters must consider factors like brilliance, color, and faceting yield before choosing a cut style. Learn what a Barion cut can bring to…
IGS Become Member