18ct gold, emerald, ruby and onyx 'Chat Malicieux' brooch, van Cleef & Arpels, circa 1955, designed as a seated cat accented with a single cabochon emerald eye framed with diamonds, a cabochon ruby nose, the body decorated with a buff top black onyx, length approximately 48 mm, signed van Cleef & Arpels, numbered 1V129.6.