Important tourbillon-style ring, in platinum 850 ‰, set in the center with an old-cut, slightly cushion-shaped brilliant of 1.64 carats, J color, VS2 clarity, fluorescence none, accompanied by its LFG certificate dated 10 / 10 / 25. The diamond is set in the center of a sinuous surround of small old-cut brilliants. The body of the ring is adorned with gadroons. French work of the 50's PB. 20.11 g - TDD. 54 - Central diamond size: 7.03 x 6.64 x 4.73 mm