GROTESQUE CAMEO BROOCH IN BLOND AGATE Oval brooch in 18K yellow gold set with a cameo in blond agate representing a grotesque mask. Cameo from the late 18th century. Gross weight: 13.45 g (a small shock to the cameo) Dimensions: 3.4 x 2.2 cm. A blond agate and 18K yellow gold cameo brooch grotesque mask. Late 18th century cameo. Gross weight : 13,45 gr. (little shock on the cameo) Dimensions : 3,4 x 2,2 cm.