The labradorite cabochon draws the eye with a dark, almost graphite surface crossed by flashes of blue and steel. This glow only appears when the hand moves and light hits it from another angle - at rest the stone stays quiet grey, but with a turn of the wrist it reveals its depth. The modern, slim band doesn't compete with this play of light and keeps the hand feeling light despite the very big size of the stone. The ring's shape suits a wedding and engagement character well - labradorite is sometimes linked to calm thinking and self-confidence, which makes it an interesting alternative to a classic stone for such an occasion.

We assess every labradorite before it's set in the mounting, checking the depth of colour and the clarity of its flashes, because only a stone like that delivers the full effect in a cabochon cut. Good labradorites are rising in price along with precious metals, so buying at this price makes sense today. The setting is refined sterling silver 925 of high alloy purity - it's this 925 fineness that confirms that purity and the absence of nickel, which could irritate the skin. A layer of rhodium protects the surface from tarnishing and scratches, keeping the shine bright for years. The craftsmanship meets European jewellery standards, and the piece's origin is attested by the French maker's mark registered with the assay office in France.

A ring of such a large format works best with an understated look - a trench coat, a simple turtleneck and a palette of cool greys or deep purple give the stone room to shine. At a meeting in the city, it's the blue flash of the labradorite that draws the eye while the rest of the outfit stays in the background. A hand in a turtleneck or trench coat sleeve shows off the cabochon with every gesture, from holding a coffee to fixing your hair. The very big size of the stone means the ring is felt on the finger, not just seen from the side.