Retro Jean Després diamond open bombe shield ring

Retro Jean Després diamond open bombe shield ring in 18kt yellow gold with platinum accents. Set with an estimated 1.00ct round Old European cut diamond in a platinum four claw collet setting, to an elegant domed design featuring a cut out rococo scrolling goldwork design, set to the centre with a floating collet with structured claws, flanked by a broad polished band with raised platinum terminals which terminate to a open yellow gold loop before curving to a solid shank, fitted to the reverse with a raised horizontally incised plaque. Hallmarked 18kt gold and platinum. Marker's mark for Jean Després. Signed 'JEAN DESPRES'.