18.00ct Antique Art Deco Platinum Diamond Brooch Pin This exquisite antique Art Deco pin is crafted in solid platinum. The piece showcases 6 large round European-cut diamonds, approx. 5.00 carats in total, 21 genuine baguette diamonds, approx. 5.00 carats in total, and some 146 genuine round diamonds, approx. 8.00 carats in total. All the diamonds are G color and VS clarity with a total diamond weight of approx. 16 carats. Weight approx.29.1 grams, approx 2 1/4 inches x 1 3/4 inches.