The cabochon-cut black onyx brings out a deep, matte black that catches a subtle, dark sheen in the light. The solitaire and promise design places this single stone at the centre, while the narrow band of rhodium-plated 925 silver keeps the eye on the stone itself. Onyx has long been linked with strength, resilience and confidence, making this ring a natural choice for a gift with a personal message. Its small size keeps the stone sitting close to the finger, so the black stands out clearly against the skin.

The onyx set in this piece is hand-selected for its deep, even colour and clean surface free of cracks - this is what determines the quality of each stone, offered here at a reasonable price. The refined silver, sourced and refined in Europe, is coated in a layer of rhodium, a hard metal resistant to scratches, so the ring keeps its shine for a long time and does not tarnish. The alloy contains no nickel or other harmful additives, so it will not irritate the skin even with daily wear. Silver and quality stones keep getting more expensive, so buying a solitaire like this now is a sound decision price-wise. The metal is confirmed by the French maker's mark, proof of its origin, stamped on the ring's band.

This solitaire comes into its own in a total-black look - a black turtleneck or a plain sweater in the same shade, against which the hand wearing the ring becomes the point of light. Its classic form takes it from the office to an evening out without changing character. French style favours this kind of simplicity: one striking stone, minimal decoration, plenty of space around it. Onyx in this form also makes a fitting gift for an anniversary or another personal occasion.