Van Cleef & Arpels fabulous emerald and diamond 'Cosmos' demi-parure, comprising of: a brooch modelled as a four leaf clover, the stamen claw-set with a circular-cut emerald framed by petals pave-set with brilliant-cut diamonds, length 41 mm, width 32 mm, trombone clip fitting, a pair of earrings, en suite, the diamonds together weighing between 10.00 and 12.00 carats, width 26 mm, clip fittings, French maker's marks, numbered, signed van Cleef & Arpels (2).