Yellow Sapphire stands nine to the hardness scale holding the 3rd placement soon after Diamond and Moissanite. Should the gemstone is more than one carat then it could possibly't have easy edges. ” type inclusions. If a yellow sapphire is heated at a significant temperature these feathers are ruined and https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html