The extensive Raman spectrometer family from Anton Paar offers the right instrument for what you want to do: Identify unknown substances, verify samples in quality assurance, analyze the chemical composition of samples, or monitor their changes.
The Cora series includes a handheld analyzer for on-the-spot identification, confirmation of substances in the field, or verification measurements on incoming goods as well as a range of benchtop spectrometers for quality assurance, and for industrial and academic research.