This analyze of yellow sapphires was enthusiastic by the lack of clarity while in the literature as for the origin with the yellow coloration. Looking back, this uncertainty was the result of a few factors. Very first, the Fe3+ focus in natural stones spans a range of around four–4750 ppma, https://ezmarkbookmarks.com/story18190626/an-unbiased-view-of-sri-lankan-yellow-sapphire-price-in-india