一切經音義 30.141

30.141

碼碯（上音馬下音惱考聲云似玉有黑文亦云玉也古今正字云碼碯石之次玉者也並從石馬[甾-十+乂]音同上皆聲經作馬非也）。

Agate / Cornelian (碼碯: the first character is pronounced like 馬, the second like 惱; the Kaosheng states that it resembles jade with black patterns, and is also called jade; the Gujin zhengzi states that agate is a stone second to jade; both are formed from 'stone' [石] with 馬 and [甾-十+乂] as phonetic, pronounced as above; for the sūtra to write 馬 alone is incorrect).