GERBE BROCHURE In yellow gold, set with scrolls of baguette-, 8/8-, brilliant- and old-cut diamonds on platinum, the largest weighing approximately 1.70 ct. A diamond, 18k gold and platinum brooch, set with round shaped diamond weighing approximately 1,70 ct. RC : Estimated colour of the main diamond : G-H, estimated clarity VS1. Brooch size: approx. 8 x 5 cm. Gross weight: 27.5 g (18k - 750 and Pt - 950).