💎⚫

#flaw #defect #material impurity #imperfection #contaminated gem #crystal defect

💎➕⚛️

#crystal defect #interstitial #point defect #lattice defect #solid state chemistry #materials science #nonstoichiometric solid #extra atom

💎🕳️⚫️

#crystal defect #vacancy #point defect #lattice defect #solid state chemistry #materials science #nonstoichiometric solid #missing atom