The turquoise cabochon in this ring shows a pure, saturated blue, with no trace of green or discoloration. The smooth, domed surface of the cabochon cut doesn't scatter light across facets, but instead gathers it into one calm plane - so the stone's colour stays even and deep, while the highlight at its crest shifts with every movement of the hand. The solitaire form, set in a classic band, works equally well as an engagement ring or as a ring for everyday wear.

This turquoise, sourced from the Sleeping Beauty mine in Arizona, is among the rarer finds - such an even, deep colour without matrix spotting is becoming increasingly uncommon in this stone. Silver and good coloured stones rise in price year after year, so buying now makes financial sense. The band is made of pure, refined sterling silver 925, and the rhodium layer on its surface is hard and scratch-resistant, so the metal's shine doesn't fade after months of wear. The alloy contains no nickel, the metal responsible for most contact allergies, so the ring can be worn without worrying about skin irritation. The inside of the band bears the French maker's mark, struck on the piece and registered with the assay office, attesting to the origin of the metal.

This turquoise pairs well with soft knitwear - a sweater in cool grey or broken white, where the stone's blue immediately draws the eye to the hand. It also works in monochromatic outfits, when the whole look is kept in one tone and the ring provides the single colourful accent. The medium size of the stone means the ring wears comfortably both by day and in the evening, without losing its classic character.