Rhodium-plated 18K (750°/°°) white gold brooch, geometric shape set with lines of 8x8 diamonds (one rose) holding three plates of frosted rock crystal, the central one (broken, accidents) pierced with a half-cut diamond of approx. 0.30 ct in closed setting. The settings are in platinum (850°/°°), the pin in 18K (750°/°°) white gold with traces of reworking: yellow gold soldering. Dimensions: approx. 45 x 15 mm - Gross weight: 7.3 g