Yellow Sapphire stands 9 about the hardness scale Keeping the third place after Diamond and Moissanite. If your gemstone is multiple carat then it may't have smooth edges. As soon as you finalize the environment, call us and we will deliver you a absolutely free return label for shipping and https://socialmediaentry.com/story3382928/not-known-facts-about-natural-yellow-sapphire-from-sri-lanka