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Certified Gemologist Mastery: 5 Practice Exams, Master Certified Gemologist Exam with 250+ Curated Questions and Answers with Explanations: 5 Practice Exams.
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Master the ...
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Gemmology Basics for Better Gemstones & Jewellery Purchase, Learn about basic gemology, the 4Cs, evaluate different kinds of gems and diamonds, and ask the right questions.
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