Tourmaline and diamond ring, circa 1910. Pink tourmaline has an unmistakably vivid magenta tone, unmatched by any other stone. This five carat cushion-shaped tourmaline, in addition to its almost-neon colour, is very clean and relatively free from inclusions – a rarity in tourmaline, which tends to have a variety of fluid inclusions. In an early 20^th century mount with millegrained diamond shoulders and elegantly tapered claws, it’s a beautiful blend of delicate subtlety with a flash of bold, uncompromising colour.