What is the definition of a gematologist?

A gematologist is a scientist who specializes in the study of gemstones and their properties, including their chemical composition, physical properties, and geological origins. Gematologists use a variety of techniques to analyze gemstones, including microscopy, spectroscopy, and X-ray diffraction. They also study the historical and cultural significance of gemstones, as well as their use in jewelry and other applications. Gematologists typically have a background in geology, mineralogy, or chemistry, and many hold advanced degrees in these fields. They may work in academia, government, or the private sector, and they may be employed by museums, jewelry stores, or mining companies.