What is Gemstone Pleochroism?
Some gems show pleochroism, two or three different colors depending on the viewing angle. Learn why this occurs and how it helps gemologists identify…
Tourmaline Engagement Rings: the Ultimate Guide
Thinking about a tourmaline engagement ring? Learn everything you need to know to buy your perfect gem, from hardness and durability to color.…
What’s the Difference Between Synthetic, Simulated, and Created Gemstones?
What’s the difference between synthetic, simulated, and created gemstones? Learn the definitions (and gray areas) of these commonly used terms.…
Understanding the Inner Workings of the Gem Trade
Based on interviews with gem trade experts, this series of FAQs addresses many topics, such as gem value, investing, insurance, and collecting.…
Emerald Enhancements: A Consumer and Trade Guide
Almost all cut emeralds have had clarity enhancements. Learn how these emerald enhancements work, what substances are used, and how to detect…
A Faceter’s Guide to Rough Gem Stress
Gem stress can cause stones to break during faceting. Learn what techniques may reduce the odds of fracturing and how to spot problem rough before…
Emerald Value, Price, and Jewelry Information
Emerald has been synonymous with the color green since ancient times. A fine emerald is a truly breathtaking sight, and this member of the beryl…
Lab-Grown Diamonds FAQ
Lab-grown diamonds are becoming popular options for engagement ring stones. Learn the truth about these gems in our FAQ and make your own informed…
How Do Tourmalines Form?
Learn about tourmaline formation, where tourmaline is found, and the unusual geological conditions that give this stone its fantastic colors.…
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