It is necessary to authenticate and confirm the technical specs in the gemstone you want to purchase. In the case of Ceylon Yellow Sapphires, watch out about deciding upon irradiated gemstones only. Immediately after lights an incense adhere in front of the gemstone the mantra “Om Brim Brihaspataye Namah” (ॐ https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share