This aquamarine engagement ring pairs the stone's cool blue with a narrow, understated band that never competes for attention. The faceted cut breaks light into small glimmers deep within the stone, and the colour settles into a pure, watery green-blue - no grey, no dullness. The ring's slim silhouette steers clear of embellishment and rests entirely on that one, distinctive tone.

A shade of aquamarine like this is hard to match in a second piece, so we chose the stone for this ring with care for its clarity and depth of colour. Good quality at a reasonable price is, here, the result of deliberate selection rather than chance, and the prices of silver and fine coloured stones have been rising for some time. The band is made from refined European 925 silver of high alloy purity, nickel-free, so the metal does not cause allergies or skin irritation. A rhodium layer protects the surface against tarnishing and scratches, so the shine lasts long without frequent cleaning. The piece is stamped with the French maker's mark, which attests to the origin of the metal.

Styled for the office, this ring pairs well with a plain shirt and a jacket in a muted, cool colour - navy, grey or deep green all bring out the cool tone of the aquamarine. On a hand working at a desk or extended in a handshake, the narrow band stays discreet, while the stone's colour catches the eye with every movement. It is a ring that works every day and holds its character in understated, elegant outfits.