Prepare for the GIA Colored Stones Final Exam – Attempt 1 with focused gemology review material covering gemstone properties, formation, identification, sources, treatments, laboratory-grown stones, imitations, grading concepts, and market factors affecting gemstone value and availability. Review important topics involving commercially significant colored gems, including ruby, sapphire, emerald, garnet, and spinel, while reinforcing essential terminology and organizing your revision for the GEM 220 assessment.
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