Gemmology is the study of precious and semi-precious stones and their properties. It includes the identification, classification, grading and appraisal of gemstones, as well as examining their structure and chemical composition. Gemmologists use a variety of tools, such as microscopes and spectrometers, to examine the physical and optical properties of gemstones. Gemmology is an important component of jewellery appraisal, as it helps to determine the value of a piece.
