Yashi ma'adini zagaye ana yin shi da ma'adini na halitta ta hanyar niƙa.Yana da babban taurin Mohs, ɓangarorin zagaye ba tare da kaifi kusurwa da ɓangarorin flake ba, babban tsafta ba tare da ƙazanta ba, babban abun ciki na silicon da babban juriya na wuta.
