This study of yellow sapphires was motivated by The dearth of clarity while in the literature as on the origin of the yellow coloration. In retrospect, this uncertainty was the result of a few factors. First, the Fe3+ concentration in natural stones spans A selection of approximately 4–4750 ppma, but https://bookmarkspedia.com/story3537693/the-best-side-of-sri-lankan-yellow-sapphire-price-in-india