Yellow Sapphire stands 9 on the hardness scale Keeping the third position after Diamond and Moissanite. If the gemstone is multiple carat then it may't have smooth edges. ” style inclusions. If a yellow sapphire has actually been heated in a substantial temperature these feathers are ruined and are quickly https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html