Wu Collection, Lower Volume Radical: Stone (shí) Character: 砨 Kangxi strokes: 10 Page 829, Entry 01 According to the Sound Rhymes (Jiyun), pronounced ai (falling-rising tone). Di-e, a type of jade. See the note under the character di. Also according to the Sound Rhymes (Jiyun), pronounced e (entering tone). The meaning is the same.