Faceted lapis lazuli opens into tiny planes that catch the light and reflect it back in a cool, deep navy. Here and there a golden thread of pyrite breaks through the dark surface, as if someone had scattered a touch of dust over the stone. This minimalist ring set with the stone works well as a solitaire worn on its own, but it also makes a fine engagement ring - the form is simple, with no unnecessary detail, so all the attention stays on the stone on the finger. Lapis lazuli has long been linked with intuition and inner harmony, and in some cultures it was seen as a symbol of idealism.

Each stone for this ring was checked against the light and chosen by hand beforehand, based on the depth of its colour and the clarity of its surface. Silver and good coloured stones are rising in price, and finding a specimen with such a rich colour is getting harder, which makes buying at this price worthwhile today. The ring is made of refined sterling silver 925 with a high-purity alloy, and a layer of rhodium protects it from tarnishing and losing its shine for years to come. The alloy contains no nickel, so the ring does not cause allergies or skin irritation. The metal bears the French maker's mark - a legally protected mark registered with the assay office in France, which attests its origin.

This ring sits well on the hand for everyday outings in the city. Pair it with a trench coat and a roll-neck in cool grey, or with a simple coat in charcoal or deep purple - the navy of the lapis lazuli settles easily into such a muted palette, while still asserting its presence with every gesture of the hand. Its minimalist form means the ring never competes with the rest of an outfit, but naturally completes it.