Gemstone Identification Quizzes: Testing Procedures
Gemstone identification can involve many tests. These quizzes can help novice gemologists learn to pick the appropriate ones and identify gems…
What is the Usambara Effect In Gemstones?
The Usambara effect is a gemstone color change phenomenon distinct from pleochroism or the alexandrite effect. Tourmaline and other species…
High-Performance Diamonds: Worth the Money or Just Hype?
High-performance diamonds are marketed as perfectly symmetrical stones of exceptional quality. Learn if they’re worth the extra money you’ll…
Rubellite Tourmaline Value, Price, and Jewelry Information
Rubellites are tourmalines with reasonably saturated dark pink to red colors and medium to dark tones. They make excellent jewelry stones, and…
Buying Gems: Test Your Identification Skills
When buying gems, gemologists must temper their excitement with an analytical eye. Test your gem identification skills with these quizzes.
Gemology Cheat Sheets
These gemology cheat sheets review gem color and clarity grading, specific information on evaluating diamonds and opals, and basic gem identification…
Gemstone Refractometer Mini-Quiz
Test your knowledge of refractometer gem analysis with this mini-quiz. You can review material on any question you miss at the end of the quiz.
A Gem Identification Quiz for Novice Gemologists
Learning how to identify gems involves more than just data. This gem identification quiz can help novice gemologists learn how to choose tests…
The GIA Diamond Cut Grading System
How does the GIA diamond cut grading system work? Our guide will explain what the grades mean and how gemologists evaluate round brilliant diamond…
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