RRUFF ID R050503 -Let us start considering graphite Raman spectrum RRUFF ID R050503. Graphite from Sterling mine, Ogdensburg, New Jersey, USA (Data source: Marcus Origlieri). The identification of this mineral has been confirmed by X-ray diffraction (RRUFF). The sample is unoriented, and the instrument settings are: Thermo Almega XR 532nm @ 100% of 150mW.