Extraordinary, French, 18ct gold, cornflower blue sapphire and diamond ringThis ring is sold, sorry. See similar rings: Metal: gold rings Gems: sapphire rings, diamond rings Colour: blue rings "We found this incredible ring in Paris. The sapphire at the centre of this cluster ring is nothing short of extraordinary. Weighing in at approximately 4 and a half carats, its impressive size is matched by a beautiful 'cornflower' blue, for which sapphires from Sri Lanka are famed, with a charming, slightly velvety silk quality to