"Tourmaline is capable of producing arguably the widest range of colours in the world of gems, including some extraordinarily vivid and distinctive hues. This particular tourmaline is a striking marine blue with flickers of green at the edges, faceted as a beautiful oval step step cut. Tourmalines of this shade are typically known as indicolite, and are one of the rarest and most highly prized varieties of this kaleidoscopic gem. Within a beautiful border of old European-cut diamonds, the ring is finished with shoulders elegantly modelled as attenuated Fleurs-de-lis. A truly remarkable and unique jewel, perfect as an Antique Engagement Ring."