Directions for Gilding, Firing, Etc. 82 finish of the gold is produced, as already stated, by polishing or burnishing with an agate or bloodstone burnisher. … BLOODSTONE BURNISHERS. GLASS BRUSH. For matting or scouring burnish gold, glass brushes are used instead of burnishers.
China painting
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.