Worldwide sale. Art Deco Brooch: Crystals, jet and brass. Pretty antique brooch in oval-shaped gilded brass. It represents a long piece of cut black glass called "jet" on a gilded brass base. On each side, a border of silver crystals 'or rhinestones'. Below, the pin is in good condition. Good condition, without defect. 7.5 cm long and 2.3 cm wide. Beautiful authentic brooch to collect or to offer.