Raman spectrometry is based on the Raman effect, which is a frequency shift of back-scattered laser light. This frequency shift is comes about as a result of vibrations and rotations of molecular bonds and is therefore characteristic of the composition and crystal structure of the sample. Our Renishaw Raman Microscope System 1000 spectrometer operates with two different lasers, a green Ar-ion laser at 514 nanometres and a He-Cd UV laser at 325 nanometres. Raman spectrometry is a powerful tool for the identification of minerals and gemstones and of inclusions in gems, and it is also used for the detection of treatments of diamonds.
