VAN CLEEF & ARPELS Clip "Pavot Mystery-set sapphires, round and brilliant-cut diamonds 18k (750) gold and 950 platinum Signed, numbered, hallmarked Design created around 1950, circa 1990 In its original case Size : 4.5 x 3.5 cm approx. : 22.6 g Description: From the 1930s onwards, thanks to its association with the Langlois workshop, Van Cleef & Arpels perfected its quest for the invisible setting with the Serti Mystérieux. This revolutionary process, for which a patent has been registered, enables precious stones to be assembled without any visible claws, creating a smooth, continuous surface that adapts to the design. This technique is used in particular to create extremely rich flowers, such as the Chrysanthemum brooches, which have become iconic pieces of the House, or our 'Poppy' clip.