u/Suddn-Sietist7458

been comparing these two before buying a ring. moissanite is harder, around 9.25 on the hardness scale, so it resists scratches a lot better over time. cubic zirconia is softer, closer to 8, so it scratches and dulls faster, usually within a year or two of daily wear. moissanite also has a higher refractive index so it throws more rainbow colored sparkle, while cubic zirconia gives a plainer white sparkle that fades quicker. if you want something that lasts longer moissanite is the better choice, but cubic zirconia is still fine if you just want something cheap for now