Yellow gold (750) and blue enamel net oval brooch, the center of which is an openwork dome punctuated with old-cut diamonds and a claw-set button pearl, in a double setting of white pearls in a studded setting and four half-pearls in a claw-set. On the back, removable frame with pin, with pin in yellow gold (750). Goldsmith's hallmark: probably H. POURPE, Nice. Second half of the 19th century. Gross weight : 29,3 g. - 4,9 x 4,2 cm. A half-pearl is missing. Some scratches, small jumps in the enamel, old repair and some soldering, wear to the pearls, including the central one, some chips.