Ikristale yeTan ikwabizwa ngokuba yikristale yeti, kwaye iquartz yomsi (iquartz emdaka) ikwabizwa ngokuba yikristale yomsi kunye nekristale ye-inki I-Radioactive Uninzi lweekristale zeti ziziintsika ezimacala mathandathu.Njengezinye iikristale ezicacileyo, ngamanye amaxesha kukho iintsingiselo ezinje ngokuqhekeka komkhenkce, ilifu kunye nenkungu.