The use of Kröger-Vink notation eliminates various other conceptual reaction alternatives due to the requirement of each charge and site balance. Certification: The presence of a reputable gemological certification from a reliable and regarded gem laboratory adds reliability and assurance to the quality of yellow sapphire or almost every other https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share