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Gemstone Coatings: CVD and More

Gemstone coatings are a simple way to enhance color and luster. Learn about commonly coated gems, different coating techniques, and how to detect…

How Does Topaz Form?

Topaz requires specific and unusual conditions to form. Learn how topaz develops and how it gets its colors, from yellow and blue to rare and valuable…

Advanced Gemology Equipment

Gemstone treatments and synthetics are becoming more sophisticated. Learn about the advanced gemology equipment that gem labs use to stay ahead…