This vintage-style ring with turquoise brings a warm, matte blue rarely seen in classic engagement jewelry collections. The stone comes from the Sleeping Beauty mine in Arizona, and this particular specimen was chosen for its even, calm colour free of streaks or discoloration. The cabochon cut shows the turquoise as a smooth, unbroken plane of colour - with no facets to break up the light, but with a gentle glow across its rounded surface. Six small cubic zirconia stones surround the stone, adding flashes of sparkle, though the turquoise remains the centre of the composition.

The prices of silver and quality coloured stones keep rising steadily, and turquoise of such a pure, even colour is becoming harder to find - at this price you get both a carefully selected stone and solid craftsmanship. The ring is made from refined European silver 925, coated with a layer of rhodium, which is hard and scratch-resistant, so the metal's shine does not dull over time. The alloy contains no nickel, the metal responsible for most contact allergies, so the ring can be worn without worry about skin irritation. The piece bears the French maker's mark, which guarantees the metal's origin.

As an engagement and promise ring, it suits romantic styling - it looks good on the hand paired with a lace blouse, a pastel dress or a soft cream-toned sweater. The small size of the stone keeps the design subtle so it doesn't overwhelm the hand, and with a simple gesture like holding a cup or brushing back hair, the turquoise naturally draws the eye. Weighing 3.5 grams, it sits light and comfortable on the finger all day long.