It is important to authenticate and verify the specifications with the gemstone you want to obtain. In the case of Ceylon Yellow Sapphires, be cautious about picking out irradiated gemstones only. Pretty piece of jewelry- well manufactured. Not as well flashy for daytime put on but good for night likewise. https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share