A Retro "Torsade" ring of tapering reeded design with a central panel of pavé diamonds, in platinum and 18k gold. Suzanne Belperron, France. Maker's mark for Groëné et Darde, the only workshop Belperron used to produce her designs. Atw diamonds 2.50 cts. Accompanied by a certificate of authenticity from Olivier Baroin. US size 6; minor re-sizing possible