Bruggmann Aquamarine and diamond gold brooch Of geometrical design ornated with an important cushion-cut aquamarine measuring approximately 12 x 12 x 6,7 mm as gauged within the mount, framed by linear elements enhanced by eight circular-cut diamonds arranged symmetrically around the aquamarine. Signed BRVGGMANN, maker’s mark, stamped 750 for 18K white gold Dimensions approximately : 4,25 cm Gross weight approximately : 17,65 grams