An 18ct gold, emerald and diamond ring

An 18ct gold, emerald and diamond ring <BR> The collet-set rectangular step-cut emerald <I>weighing approximately 5.45 carats</I>, between princess-cut diamond shoulders, <I>hallmarked London 1991, finger size L½<BR> Accompanied by report number 05100 from the Gem & Pearl laboratory, London, dated 13th January, 2012 stating the emerald to be of Columbian origin with moderate clarity enhancement</I> <BR>