Yellow Sapphire stands nine to the hardness scale Keeping the 3rd position soon after Diamond and Moissanite. If your gemstone is more than one carat then it could possibly't have easy edges. Yellow sapphires regularly have less inclusions than other shades, and they're held to increased clarity criteria than blue, https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html