beryl, synthetic beryl, emerald, gems, SEM

Hofmann, Schrader and Stender describe applications of scanning electron microscopy (SEM) to gemological research, emphasizing its usefulness for examining surface structures and extremely small features beyond the practical resolution of conventional gemological microscopy. Examples illustrate how the technique can reveal the morphology of inclusions, growth and dissolution features, fracture surfaces, and other microscopic structures relevant to gemstone investigation. When combined with electron-beam microanalysis, SEM also permits localized chemical characterization of minute inclusions or surface features. The brief article demonstrates the value of SEM as a complementary research technique where conventional optical microscopy alone provides insufficient morphological or compositional information.