The black onyx cabochon fills the setting with a smooth, gently domed surface that catches the light in one concentrated glint rather than scattering it across facets. In the hand the stone looks deep and calm, and its black has no grey undertones or cloudiness - it is a pure, uniform colour visible from the very first look at the stone before it is set. The modern, understated band does not draw attention away from the onyx, so the whole piece stays striking without unnecessary embellishment - it works well both as an engagement ring and as a wedding ring, and also as an everyday symbol of commitment.

Only stones with an even, deep black free of scratches and cloudiness go into this setting, which, given today's rising prices of good stones and silver, makes this purchase a sensible decision. Onyx has long been associated with strength, endurance and confidence, which suits a ring worn as a mark of a lasting decision well. The ring is made of pure, refined European silver free of nickel and harmful additives, and the 925 fineness confirms the purity of this alloy. A layer of rhodium protects the surface from tarnishing and scratches, so the metal's shine lasts long despite everyday wear. The maker's mark struck on the piece, registered with the French assay office, attests to the origin of this silver.

Black onyx fits well into an urban, everyday style - it goes with plain jeans, a white shirt and a leather jacket, where the dark stone on the hand acts as a subtle yet distinct detail of the whole look. It also works well under a loose sweater and coat on cold days, when the rest of the jewellery is kept to a minimum. With every hand gesture - holding a cup, opening a door, shaking hands - the onyx cabochon catches the light differently each time, while keeping that same deep black.