Modern gemology has advanced far beyond traditional 10x loupe inspection and refractometers. Today's market challenges—notably the proliferation of sophisticated Chemical Vapor Deposition (CVD) and High Pressure High Temperature (HPHT) lab-grown diamonds—require molecular-level verification.
Spectroscopy inspects atomic defect centers within the diamond crystal lattice. Natural diamonds typically exhibit nitrogen aggregate signatures (such as the prominent N3 optical center absorbing at 415.2 nm), while synthetic stones display telltale silicon vacancies (737 nm), isolated nitrogen, or metallic catalyst traces.
Beyond diamonds, spectroscopic analysis identifies synthetic ruby vs natural Burmese corundum, differentiates emerald geographic origins via iron/vanadium ratios, and uncovers sophisticated fracture-filling and resin treatments.