Defect chemistry will be the examine of issue defects in imperfect crystals. These involve vacancies, interstitial atoms or ions, trace elements, electrons, or holes or almost every other deviation from the construction of a perfect crystal. Even Definitely pure crystals consist of stage defects at any temperature over absolute zero. https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share