19th c. transformable brooch ring in pink gold and silver set with an antique cushion-cut diamond (approx. 2.80 ct) surrounded by old-cut diamonds, finger 53.5-13.5, h. brooch 2.3 cm Good overall condition given the age of the piece Antique cushion-cut diamond : dimensions approx. 7.84 x 7.52 mm approx. 2.80 ct J-K/VVS Fluo faint