Proto-Sino-Tibetan: *căk (~ć-)
Meaning: red (metal), gold
Kachin: (?) ǯa2 metal.
Lushai: raŋ-ka-čak gold (cf. rāŋ-va tin), KC *ka-tśak.
Comments: BG: Dimasa gă-dźao red; gold, Garo gittśak red; Rawang za silver; money; Idu *ši, Nocte achak 'red' Sh. 54; Ben. 46. Cf. perhaps Karen: Geker ḍʒaʔ.53 'black', Apatani ʒì, Naga *kǝcik, Magar cik 'black'.