Yellow sapphires that are Improved as a result of lower-level radiation eliminate their color as time passes and fade away as a consequence of heat and exposure. White sapphires are valued for their brilliance, clarity, and durability. Even though They could not have the vivid coloration of other sapphire varieties, https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html