Sterling silver blue john diamond pear necklace this beautiful necklace features a pear shaped piece of multi faceted blue john set within 18 ct white gold the central stone is surrounded with 47 set diamonds and two larger ones below the bale designed and made within our workshops in ashbourne this exquisite collection offers the best of cw sellors local legend insists that this beautiful purple yellow and white banded fluorspar was first mined in the derbyshire village of castleton durin