Defect chemistry could be the study of stage defects in imperfect crystals. These consist of vacancies, interstitial atoms or ions, trace elements, electrons, or holes or every other deviation from the composition of an ideal crystal. Even Totally pure crystals include point defects at any temperature over complete zero. By https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share