The deep navy of the sapphire in this ring shifts shade with every movement of the hand. The faceted cut splits light into small glimmers that fade and catch again as you turn your wrist. The form is simple and classic, free of unnecessary detail, so all attention stays on the stone. This ring is meant as a promise ring, so its strength lies in its modest, considered form rather than its size - the band is very small and light, weighing 2.0 g.

For this piece we chose a sapphire with a particularly pure, saturated colour, free of cloudy zones, which only becomes apparent on closer inspection. Silver and gemstones rise in price year after year, and clean sapphires in good colour are becoming harder to find, so this purchase makes price sense today. The setting is rhodium silver, refined silver 925 of high alloy purity, coated with a layer of rhodium that protects the surface against tarnishing and scratches, so the shine lasts long. The alloy is free of metal additives that cause allergic reactions, so the ring can be worn without worrying about skin irritation. The silver bears the French maker's mark, which attests to the metal's origin.

A ring like this feels at home in calm, layered weekend looks. An oversized sweater in cool grey, a shawl draped over the shoulders and a hand peeking out from a long sleeve - this is the setting where the sapphire's navy depth comes through most. Over a cup of coffee or in the gesture of wrapping a shawl, the stone catches the light and draws the eye, while the outfit around it stays understated. It also pairs well with a linen shirt and simple, classically cut trousers.