Old brooch in yellow gold and agate cameo

Oval brooch in 18 kt yellow gold (eagle's head hallmark), set with a beautiful agate cameo representing an antique woman in profile surrounded by fine bands of black enamel. French work from the 19th century. Gross weight: 25.70g Height: 4.50 cm Width: 3.80cm Condition: very light micro scratches on the gold parts, see photos. Cameo (nm): fine stone or shell chiseled so as to form a figure in relief and with or without superimposed layers of different colors. To learn more, it's here : The Glyptic All our antique brooches.