Flore Silver Blue John Four Petal Filigree Ring. R807. This statement Sterling Silver ring features a four petal flower, the petals are in filled with an intricate filigree pattern and the centre of the flower is set with a cabochon of Blue John stone that has been sourced directly from Treak Cliff Cavern in Castleton. Pair with another piece from the Rebecca Sellors Flore collection for a really unique look. 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 rings online and instore. Flore Silver Blue John Four Petal Filigree Ring. Dimensions 25 x 25mm setting with 3mm stone.