This review of yellow sapphires was inspired by The dearth of clarity during the literature as towards the origin with the yellow coloration. In retrospect, this uncertainty was the result of 3 factors. 1st, the Fe3+ focus in natural stones spans a range of close to 4–4750 ppma, but only https://bookmarktune.com/story18008200/considerations-to-know-about-sri-lankan-pukhraj