Figure 7
Partially enlarged images of the gold finger ring and SEM images of the black decoration on side A. The casting shrinkage on (a) the back of the ring bezel (rectangular frame) and on (b) the ring hoop (oval frame). (c) the morphology of the black decoration. (d) The gap between the black decoration and the ring bezel. (e) and (f) Bright inclusions in the black decoration (BSE). (g) A hole on the edge of the top left of the black decoration. (h) The magnified image viewed from the side of the black decoration.
