Allochromatic gems are gems which can be colored by impurities. If they ended up fully pure, they might be colorless. The color of all allochromatic gems is made by defects. As a result, all color in corundum is attributable to defects. Known for its clarity and shading uniformity, the Burmese https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share