Belle Époque brooch in gold and platinum with diamonds, rub

Belle Époque brooch, ca. 1915, in yellow gold with platinum accents featuring curved lines and garlands studded with old-cut diamonds totaling approximately 2.00 ct., including three millegrain settings (one of them a pendant), calibrated natural rubies, and three pearls. The back of the piece suggests it was originally part of a set. Gold prong with a tube clasp. Weight: 17.3 g.