C W Sellors Sterling Silver Blue John Marcasite Round Double Drop Earrings, E1641. These eye-catching earrings feature a gorgeous, round hand carved piece of Derbyshire Blue John which is enclosed by beautifully intricate Marcasite gemstones. Perfect for that special sparkle, for a loved one or an indulgent treat for yourself! Dimensions: Stud; 11.25mm x 11.25mm Lower drop; 17.55mm x 17.55mm. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Matching items are available within this collection.