Catherine first wore Mappin & Webb Empress Diamond Pendant Necklace in August 2014 when she visited the poppy art installation at the Tower of London. A sparkling and versatile diamond pendant from the Mappin & Webb Empress collection is set with 0.40 carats of round brilliant-cut diamonds in 18 carat white gold on a 46cm chain adjustable to 40.5cm. The motif measures 15mm (0.59 inches) in diameter. The necklace is available for £2,000.00. Duchess also has matching Empress earrings from Mappin & Webb.