3 septembre 2015
A coloured diamond single-stone ring
An 11.80 carats coloured diamond single-stone ring. Estimate £80,000 - 120,000 ( €110,000 - 160,000) . Photo: Bonhams. The old brilliant-cut diamond, weighing 11.80 carats, within a single-cut diamond surround and similarly-cut diamond shoulders, ring...