NIESSING designer solitaire ring with brilliant-cut diamond of approx. 1.98 ct,

NIESSING Design solitaire ring with brilliant-cut diamond ca. 1.98 ct, ca. WHITE (H)/VVS, current replacement value (2025): ca. 30.000 €, 18K yellow and white gold, 14.7 g, ring size 62, late 20th century, good condition, marked 'NIESSING', including copy of jewellers certificate.