Is definitely the species, neutral or ionized, indicated by its normal chemical image. Vacancies are denoted by V Certification: The existence of a reputable gemological certification from a dependable and regarded gem laboratory adds reliability and assurance to the caliber of yellow sapphire or almost every other gemstone. Yellow sapphire https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share