Avantes has developed spectrometers, halogen light sources, fiber optic reflection probes, reflection integrating spheres, and more for the gemology industry. These measurement tools are used to measure the characteristics of gems, or to determine if stone has been treated. Some measurements can be quite simple and can be performed with integrating sphere or probes. More advanced measurement techniques can be done through photoluminescence systems or TE cooled spectrometers. This application note discusses Avantes’ capabilities as they relate to gemology measurement.