Platinum Diamond Buckle Brooch with 1.30ct Center Stone

Platinum and diamond brooch, of decorative buckle design, centring a bezel-set old European-cut diamond weighing approximately 1.30 carats, within a pierced surround set throughout with single and old European-cut diamonds together weighing approximately 6.38 carats, to a bar pin fitting in 10ct white gold, length 2.95 in., width 1.18 in., gross weight approximately 20.2 grams.