Yellow Sapphire stands 9 to the hardness scale Keeping the third situation immediately after Diamond and Moissanite. Should the gemstone is more than one carat then it could possibly't have clean edges. Yellow sapphires frequently have fewer inclusions than other hues, and they're held to increased clarity requirements than blue, https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html