A gemologist is a trained professional who studies and evaluates gemstones. They possess specialized knowledge about the formation, identification, and grading of various gems, such as diamonds, emeralds, and sapphires. Gemologists often work in jewelry stores, appraisal firms, or laboratories, where they use tools like microscopes and refractometers to analyze stones. In addition to assessing the quality and authenticity of gemstones, gemologists may also provide education to customers about the characteristics and care of their jewelry. They play a crucial role in the jewelry industry, ensuring that consumers receive accurate information about their purchases and helping to maintain the integrity of the market.