Yellow Sapphire stands nine within the hardness scale holding the 3rd place just after Diamond and Moissanite. Should the gemstone is multiple carat then it can't have easy edges. See: Undefined variable: GemstoneImagesCount in /property/jawharat/domains/heerejawharat.com/public_html/inc/displaygemstones.php on line 140 Notice: Undefined variable: gemOrderName in /residence/jawharat/d... https://www.apsense.com/article/810029-some-historical-facts-about-sri-lankan-yellow-sapp.html