Antique Asian Calligraphy Stone W Dragon Detail In Polished Wood Box

This beautiful polished wood box hols a calligraphy stone which has a detailed dragon decorating the top. The wooden box has a polished smooth lustrous finish. The box sits on 4 slightly raised wooden feet. This belonged to my 101 year old relative who was an antiques collector. I found it in the very back of his antique mahogany roll top desk. It is just beautiful. I have no more information about this. Measurements: ! The wood box measures 5 3/4” by 4 1/4 “ and is 1 1/4” deep. The stone measures 5” by 3 1/2” and is 5/8” deep.