A turquoise cabochon in a uniform, saturated blue tone sits at the centre of a very big engagement ring with a modern design. The stone comes from the Sleeping Beauty mine in Arizona, source of some of the most prized turquoise in the world. Before being set, it was assessed for colour and uniformity - only turquoise that meets this standard earns a place in the collection. The smooth, domed surface of the cabochon draws light into a single point, like a calm surface of water without a trace of clouding.

The silver is coated with a layer of rhodium, a metal resistant to scratching, which protects the setting from tarnishing and keeps its shine for years to come. Underneath lies pure, refined sterling silver 925 - an alloy free of nickel, the metal known to trigger allergic reactions, so the ring can be worn without worrying about skin irritation. The piece is stamped with the French maker's mark, which guarantees the origin of the metal. The availability of valuable stones is limited by nature itself, and silver prices are rising, which is why buying a ring like this today makes financial sense.

On the hand, the ring pairs well with simple, natural fabrics - a linen shirt, a loosely cut cotton sweater, an everyday gesture without pretension. The blue turquoise works well with denim and beige tones, but is just as happy to take centre stage against dark, smooth knitwear. The very big size of the stone means the hand draws attention without the need for further adornment. This is a ring that holds up easily to everyday wear while keeping its bold, modern character.