Defect chemistry may be the research of point defects in imperfect crystals. These include things like vacancies, interstitial atoms or ions, trace things, electrons, or holes or any other deviation from the composition of a great crystal. Even Certainly pure crystals contain position defects at any temperature above complete zero. https://www.tumblr.com/thegemjournal/759696203354128384/understanding-the-unique-characteristics-of-yellow?source=share