Fig. 6: Raman spectra of several gemstones.
The Raman spectra of a ruby (red variety of corundum), b transparent beryl (goshenite) and c quartz.
Fig. 6: Raman spectra of several gemstones. | npj Heritage Science
The Raman spectra of a ruby (red variety of corundum), b transparent beryl (goshenite) and c quartz.
