18ct White Gold Blue John King's Coronation Hallmark Large Oblong Ring As anyone with a love of fine jewellery and its craftmanship will know, the UK hallmark provides a unique and identifying feature to any design. Dating back to the 14th century, UK hallmarking has provided customers with a sign of excellence, origin and approval on all jewellery passed through their Assay Offices for inspection.

18ct White Gold Blue John Hallmark Large Oblong Ring. R064_FH. As anyone with a love of fine jewellery and its craftmanship will know, the UK hallmark provides a unique and identifying feature to any design. Dating back to the 14th century, UK hallmarking has provided customers with a sign of excellence, origin and approval on all jewellery passed through their Assay Offices for inspection.

18ct White Gold Blue John King's Coronation Hallmark Large Oblong Ring As anyone with a love of fine jewellery and its craftmanship will know, the UK hallmark provides a unique and identifying feature to any design. Dating back to the 14th century, UK hallmarking has provided customers with a sign of excellence, origin and approval on all jewellery passed through their Assay Offices for inspection.

18ct White Gold Blue John Diamond Oval Ring. R1110. This unique 18ct white gold ring features a stunning hand carved cabochon of the finest Blue John stone which has been sourced directly from Castleton, Derbyshire.

18ct White Gold Blue John Diamond Large Four Stone Dragonfly Necklace, P1743C This stunning medium dragonfly necklace s hand made in 18ct White gold and features beautifully hand carved  Blue John gemstones set into the dragonfly wings. The Blue John is sourced directly from Castleton, Derbyshire. The  tail is accented with sparkling brilliant cut diamonds making this an exquisite and eye catching piece which would make a beautiful gift.

18ct White Gold Blue John 0.89ct Diamond Central Stone Flower Necklace, P2661 Set with diamonds in 18ct white gold, this elegant pendant features a round central Blue John gemstone surrounded by an intricate flower design set with 17 brilliant cut diamonds, including five diamonds that have been set within the bail to complete the piece. The Blue John is sourced directly from Castleton, Derbyshire. This gorgeous pendant is supplied complete with a 18 inch 18ct white gold chain. Total diamond weight is 0.89ct.

18ct White Gold Blue John Diamond 0.31ct Round Claw Set Ring, R1273.

18ct White Gold Blue John Diamond 0.31ct Round Claw Set Ring, R1273.

18ct White Gold Blue John Diamond 0.20ct Round Claw Set Ring, R1270.

18ct White Gold Blue John Diamond 0.18ct Ornate Claw Set Ring, R1274.