Antique 18k Gold Platinum Reversible Green Red Enamel Diamond Pearl Brooch. This is a rare antique circa 1910 brooch with a reversible movebale center that switches from red enamel to green enamel. Both sides has a fluer de lis like design with nine rose cut diamonds. The brooch has 23 pearls set in platinum. The back of the brooch is all 18k and has old European hallmarks and makers marks. Reversible pieces like this are rare and very hard to find. The brooch is in excellent condition. Measures 36mm wide by 30mm high. Weight 21.1 grams.