While evaluating the brilliance of white sapphire and moissanite gemstone, it is seen that moissanite is usually brighter than white sapphire. Due to its high refractive index of 2, moissanite is widely acclaimed for its breed in brilliance. 65 to 2. 69 to be able to reflect light with powerful vigor and flare. As for White Sapphire, this has a slightly lower RI that ranges between 1. 76 and thus its shine is slightly less bright. In addition to this Moissanite gives better brilliance as it has dispersion, which makes colors lighten up. However, compared to all other types of sapphire, white sapphire, though aesthetically sophisticated, does not shine or sparkle in the same way. Therefore, for people who want the brilliant shine among all the materials, I can definitely state that moissanite is the best option.