Sterling Silver Turquoise Toscana Long Marquise Necklace. P1613. This elegant necklace is part of our Toscana collection and features the finest natural Kingman Turquoise. The striking gemstone is elegantly framed in a highly polished sterling silver setting creating a sleek and contemporary look. Sold complete with an 18 inch sterling silver chain which fastens with a classic bolt ring style clasp. 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. The Kingman mine is recognised as one of the oldest and largest turquoise mines in America, 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. Dimensions: 40mm x 12mm.