Some Advice for Cutting Tourmaline Gemstones
Cutting tourmaline can be difficult. Learn how to cut tourmaline, including faceting techniques to minimize the risk of damaging your stone.…
Understanding Gem Synthetics, Treatments, and Imitations, Part 5: Gemstone Treatments
Identifying gemstone treatments is difficult even for experienced gemologists. Learn about the many different ways gem color and clarity are…
James Allen Review
Launched in 2006, online jewelry retailer James Allen is a disrupter in the diamond market that seeks to educate buyers on diamonds and colored…
Color Grading Fancy Colored Diamonds
The color grading standards for white diamonds don’t apply to fancy colored diamonds. Learn the GIA and Argyle grading systems and how to find signs…
Verdelite (Green Tourmaline) Buying Guide
Looking for a tourmaline jewelry stone? If you like green and you’re on a budget, green tourmaline or verdelite is the gem for you.
Tourmaline Buying Guide
Known for stunning, saturated hues, tourmaline is a colorful and modern gemstone. Read about quality factors for this gem in our tourmaline buying…
A View of the Quartzsite Gem Shows
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…
Gems Of East Africa – Mine direct gemstone suppliers
We are GEMS OF EAST AFRICA, a London UK-based gemstone dealer with our own buying office in Tanzania. Suppliers to the global gem community since…
Cutting Natural Rough Stones: The Breaks
If you’re cutting natural rough gems, learn to expect fractures. Stress from an unknown flaw can break out during roughing, faceting, or even…
IGS Become Member