The deep, velvety black of black onyx comes fully into its own thanks to the cabochon cut - the smooth, domed surface of the stone plays with light with every movement of the hand, revealing no flaws or discoloration. The solitaire shape stays simple and classic, with no unnecessary details to distract the eye from the stone. This ring works well as a statement piece worn alone, but it also fits naturally into the role of an engagement ring - onyx has long been associated with strength, endurance and self-confidence, making it a fitting symbol for such an occasion.

We select each onyx for this solitaire individually, examining the stone under light to find a piece with an even, unbroken black free of streaks or dull patches. Silver and other precious metals rise in price year after year, and stones with such purity of colour are harder to find today at a reasonable price. The ring is set in refined silver of European quality, sterling silver 925, coated with a layer of rhodium - a hard metal that protects the surface from tarnishing and scratches, keeping the shine bright for years to come. The alloy contains no nickel or other allergenic additives, so it can be worn without worrying about skin irritation. The metal is stamped with a maker's mark registered at the French assay office, which attests to its origin.

For office wear, this ring looks best with a smooth shirt and a fitted blazer in muted colours - grey, navy or beige. The black of the onyx does not compete with the rest of the outfit, but quietly draws attention to itself as the hand rises in a gesture or while signing documents. The small size of the stone and its weight of 1.9 grams mean the ring sits lightly and discreetly on the finger, without losing any of its character.