18ct Yellow Gold Blue John King's Coronation Hallmark Large Square 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 Yellow Gold Blue John King's Coronation Hallmark Large Rhombus 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 Yellow Gold Blue John King's Coronation Hallmark Large Rhombus 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 Yellow Gold Blue John Diamond Round Solitaire Ring, R1093 This delicate 18ct yellow gold ring features a stunning hand carved 0.15ct cabochon of the finest Blue John stone which has been sourced directly from Castleton, Derbyshire. Sparkling diamonds totalling 0.18cts accent the shoulders of the ring. The perfect engagement or dress ring featuring a rare British gemstone, with a slim band which allows it to be worn next complementary styles.

18ct Yellow Gold Blue John 0.41ct Diamond Oval Claw Cluster Ring. R602. This elegant ring features a stunning oval shaped cabochon of the finest Blue John stone, sourced directly from Castleton, Derbyshire. The beautiful 18ct yellow gold frame is embellished by dazzling 0.41 carats of brilliant cut diamonds.  At C W Sellors, we have an expert team of gemstone and diamond specialists who handpick and grade each jewel to meet our high standards and a team of talented in house designers who combine their talents to bring you our exclusive Precious Gemstone collection.

18ct Yellow Gold Blue John 0.03ct Diamond Bracelet, 20J2918RB524D3. This exquisite 18ct yellow gold bracelet features six stunning triangle shaped cabochons of the finest Blue John stone, sourced directly from Castleton, Derbyshire. The links are set within the bracelet in pairs and each pair is connected with a sparkling brilliant cut 0.03ct diamond in a bezel setting. The striking, contemporary 18ct yellow gold bracelet is perfect for every occasion. The bracelet is secured with a T-bar fastening for easy wear.

18ct Yellow Gold Blue John King's Coronation Hallmark Medium 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 Yellow Gold Blue John King's Coronation Hallmark Large Round 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 Yellow Gold Blue John King's Coronation Hallmark Large Round 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 Yellow Gold Blue John King's Coronation Hallmark Large Oval 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.