Yellow Sapphire stands 9 to the hardness scale holding the 3rd placement following Diamond and Moissanite. In case the gemstone is more than one carat then it may possibly't have clean edges. As soon as you finalize the setting, simply call us and we'll ship you a free return label https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html