Belle Epoque brooch In silver and 18K (750) pink gold featuring an arabesque set with twenty-eight old-cut diamonds, two of which are larger, a round sapphire and two white button pearls. hallmark: charançon diamonds, estimated total weight: 5.50 ct (the two largest weigh approximately 0.40 ct, eighteen weigh around 0.25ct each). sapphire, estimated total weight: approx. 1 ct diameter of beads: 6 mm hallmark: charançon D: 3.2 cm Weight: 12.2 g