The colour enhancement treatment on native brown and yellow diamonds can be highlighted by Photo Luminescence analyses performed with the Raman spectrometer LabRAM HR. The PL signature of green and violet diamonds has also been recorded. The defect centres responsible of the colour of the diamonds have all been detected and assigned. This proves the Raman spectrometer to be a very good tool to investigate the fine defects in the Diamond structure by Photoluminescence analysis.

Raman spectroscopy is a practical exploration tool to study geological materials. This technique is a rapid and reliable way to confirm, for example, that a geological sample is really a jade gemstone, or that its composition is dolomite. Chemical information can be obtained without any extraction procedure or sample preparation. Thus, the analysis can be achieved in situ and if necessary directly at the geological site. Raman imaging is also useful to study heterogeneous samples provided by the various fields of application of Earth Science: mineralogy, gemmology, petrology, geoarcheology, paleontology, planetology or volcanology. By the mean of this vibrational technique, the complex history of the Earth can be better understood.

Raman Spectroscopy is a scattering technique probing the vibrational modes of molecules and crystals. Raman signatures provide information about the chemical nature and the crystalline structure of samples. This characterisation method is fast, non-destructive and does not require any particular sample preparation.

The high information content of spectroscopic techniques such as Xray fluorescence and Raman has been coupled with analysis on the micron scale to provide imaging techniques for scientists from many varied research fields. Micro-spectroscopy is leading the way in many novel applications, providing far more detail and contrast than is possible through more traditional techniques.

显微共焦拉曼光谱仪能够便捷地分析矿物组分，并且提供高空间分辨率的组分分布图，及原位分析流体包裹体。本文利用拉曼光谱对不同成岩演化阶段中产生的不同类型的烃类包裹体进行检测，获得了油气藏和包裹体在地质历史中不同体系的高温极端裂解和H2S成因的重要证据。此外，还对固体有机质进行研究获得其热演化模式。