Allochromatic gems are gems which are colored by impurities. If they have been completely pure, they might be colorless. The color of all allochromatic gems is produced by defects. As a result, all color in corundum is brought on by defects. Right after lighting an incense stick before the gemstone https://bookmarketmaven.com/story18557258/indicators-on-sri-lankan-pukhraj-you-should-know