Yellow sapphires which are Improved as a result of low-stage radiation eliminate their colour after a while and fade away resulting from warmth and exposure. The White Sapphire is an expensive gemstone that catches the light in all its glory. This gemstone also is known as Safed Pukhraj in Hindi, https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html