Sterling Silver Turquoise Large Cushion Signet Ring, R180. This classic signet-style ring features a hand carved curved square Turquoise gemstone, which is inlaid into a thick band of sterling silver. Because the Turquoise is inlaid within the metal, this creates a beautiful smooth finish and creates a brilliant shine. Dimensions: Turquoise; 13mm x 11mm. Width of band; 4mm. We hand select only the finest quality natural Turquoise, which we cut and polish to perfection in our workshops 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 the December birthstone. All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging. Matching items also available within this collection.