9ct Yellow Gold Blue John Barrel Shaped Necklace, P025. This feminine, contemporary pendant showcases a beautifully polished and hand carved barrel shaped Derbyshire Blue John gemstone set in 9ct yellow gold. Very slightly rounded at the corners, the pendant has a softer appearance, and would suit a multitude of styles and occasions. Presented on an 18 inch yellow gold chain through a fixed bale. Dimensions: 26mm x 11mm, Blue John; 16mm x 10mm. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.  Matching items available within this collection.