Rock, Gem & Mineral Identification - Ozarks Gem & Mineral Society
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What is Gemstone Dispersion? - International Gem Society
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Gem color is one of the most important elements in gemstone grading. Subtle variations can make a substantial difference in value. Novice gemologists must learn to accurately describe colors. Photo Credits 📷 saltgemsco https://www.instagram.com/p/CTIMRq8HpwV/ | International Gem Society
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