Allochromatic gems are gems that are colored by impurities. Whenever they had been completely pure, they'd be colorless. The color of all allochromatic gems is produced by defects. Thus, all shade in corundum is brought on by defects. Therapeutic Added benefits: The stone also offers lots of healing benefits to https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share