The deep violet of the amethyst in this ring has a sincerity rarely found in stones of this size - the dark purple shifts in places to a cooler plum shade, and the faceted cut draws out fine glints with every movement of the hand. A delicate, small band with a vintage line makes the stone look as though it were found in a family jewellery box, though the setting stays fresh and light on the finger. Old-time jewellers linked amethyst with calm and clarity of mind, and in engagement tradition it was sometimes a symbol of lasting balance between two people.

Before it goes into a setting, every amethyst is examined for colour purity and clarity - the stone here passed the test with a saturated, even violet free of cloudy patches. Silver and good coloured stones rise in price year after year, so a ring of this quality at this price is a sensible choice today. It is set in pure, refined sterling silver 925 - a rhodium layer protects the surface against tarnishing and scratches, so the ring rarely needs polishing. The alloy stays free of metal additives that trigger allergic reactions, so it can be worn without worrying about skin irritation. The piece is signed with the French maker's mark establishing its origin, registered with the assay office in France.

The small size and light weight of 2.7 grams mean the ring is barely noticeable on the finger, and the violet of the stone pairs well with natural fabrics. An ecru linen shirt, a loose cotton sweater or a simple dress in smooth knit - against such understated outfits it's the amethyst that catches the eye and draws it to the hand. The vintage line of the band also holds up well to everyday gestures - shaking hands, turning a page, resting a hand on the table.