An Art Deco emerald

An Art Deco emerald, diamond and ruby jabot pin by Cartier, 1930s. Centred with a carved fluted emerald to the upper section with diamond centred graduated ruby cabochons with red and black enamel highlights. With conforming decoration to the diamond-set removable terminal. The terminal signed Cartier and indistinct inventory number; probably 30161541. 4.3cm long. In buff colour leather case (broken), the silk lining marked for Cartier, London, Paris, 653 5th Avenue, New York.