ART DECO period brooch in platinum (850‰) with openwork decoration set with round old-cut diamonds and a mobile emerald ball in a pendant weighing approximately 2 to 3 carats (14k gold pin) Diameter of the emerald: 11.56 mm Dimensions: 5.8 x 3.5 cm Gross weight: 12.7 g Accompanied by a preliminary examination by the Laboratoire GEM Paris n° 20241977791-2 dated July 2024 indicating : Origin: Colombia Treatments : Moderate oil (E3-2)