Sterling Silver Turquoise Marcasite Shield Ring. R819. This feminine Sterling Silver, Turquoise and Marcasite ring features a circular central piece of Turquoise.  The striking stone is surrounded by sparkling pieces of Marcasite set into a sterling silver shield and embellishing a classic silver band.  We hand select only the finest quality natural Turquoise, which we cut and polish to perfection in our Derbyshire workshop to produce beautifully handcrafted Turquoise jewellery. We source our Turquoise gemstones from the famous Kingman mine in North Western Arizona which is recognised as one of the oldest and largest Turquoise mines in America. The mine is also widely known for producing highly collectable gemstone grade Turquoise. Kingman Turquoise is distinguished by its unique lustre, striking characteristics and sky-blue colour. Turquoise is also famed for being the December birthstone. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.Matching items available within the collection. Silver Turquoise Marcasite Shield Ring. Turquoise 7mm diameter, top of ring 25mm diameter.