Brilliant Moissanite Stud Earrings Refined Everyday LuxuryThe solitaire stud is the most enduring design in earring jewelry a single stone, held in a four prong setting, letting the gemstone's brilliance do all the work. On a moissanite stone, that brilliance is exceptional. Moissanite has a refractive index of 2. 65 compared to diamond's 2. 42, which means it produces more light dispersion the rainbow like flashes of color known as fire. In practical terms, these studs catch and reflect light more intensely