18ct white gold and diamond 'Centenary' ring, Kim Buck, Georg Jensen Tension-set with a brilliant-cut diamond weighing 0.40 carats, size 50 (J), with maker's mark for Georg Jensen, numbered 1493B. Accompanied by a copy of GIA diamond dossier numbered 15939507, dated 22 May 2007, stating the 0.40 carat diamond is H colour, IF clarity, laser inscribed, together with a copy of the original invoice and a Georg Jensen box