Gem Origin Opinions: When Gemology Labs Agree to Disagree on Sapphire Origins
Why do gemology labs sometimes have different gem origin opinions, especially for sapphires? Learn the science and history behind the debate.…
Lapis Lazuli Buying Guide
Our lapis lazuli buying guide can help you learn how to grade these gems, what to avoid, and how to identify a high quality stone or a bargain in the…
March Birthstone: Aquamarine
The modern birthstone for March is aquamarine, a blue stone often connected to the ocean.
Villiaumite Value, Price, and Jewelry Information
A little-known and rare collector’s gemstone, villiaumite is very difficult to facet. Its toxicity also makes it inadvisable to handle or wear.…
10X Loupe for Gemologists and Jewelers
The 10X loupe is the gemologist’s best friend. Learn how to examine gemstones for fractures, inclusions, color, and much more with this simple…
Gem, Mineral, and Rock Scanner Identification Apps Review
How accurate are gem, mineral, and rock scanner identification apps? Our review covers the strengths and weaknesses of over 20 apps.
Gemstone Faceting Terms: A Glossary for Students
A glossary of frequently encountered gemstone faceting terms for the student gemologist. Our list covers gemology, gem cutting, and equipment.…
How it Works: Recutting Gems to Maximize Value
Recutting gems that have been poorly cut can increase their value significantly. See how precision custom cutting can transform a gem.
September Birthstone: Sapphire
What is the birthstone for September? The birthstone for September is sapphire. Sapphires are members of the gem species corundum. Depending…
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