Yellow Sapphire stands nine to the hardness scale holding the 3rd place right after Diamond and Moissanite. In case the gemstone is more than one carat then it could possibly't have smooth edges. Ans.As white pukhraj stones are a selected number of yellow sapphires, They could be priced otherwise. It https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html