Flore Silver Blue John Filigree Long Necklace. N946. This contemporary necklace is part of Rebecca Sellors' Flore collection which features six cabochons detailed with the signature intricate filigree pattern connected by a fluid Sterling Silver chain. Two of the circular filigree cabochons have been backed with Blue John stones that have been sourced directly from Treak Cliff Cavern in Castleton. The intricate detailing of this design has been created using the latest Laser Sintering Technology. All our Blue John jewellery is designed and crafted within our very own workshops in Ashbourne, Derbyshire where a team of skilled craftsmen turn the raw Blue John stone into these stunning pieces of jewellery. You can find other matching Blue John jewellery and other Blue John necklaces online and instore. Flore Silver Blue John Filigree Long Necklace. Disc dimensions 1.2cm, total length of the necklace 78cm.