The moonstone cabochon brings a cool, blue flash to this classic engagement ring, one that appears and vanishes with every turn of the hand. Adularescence is the effect unique to this stone: the surface looks smooth and glassy, and the blue glow only surfaces when the light hits it at the right angle. The very big, striking form of the ring gives the stone plenty of room, while the rhodium silver frames it in a narrow, understated band. Moonstone has long been linked to intuition and inner awareness, so in an engagement ring it carries a meaning that goes beyond looks alone.

Before it is set, every cabochon is examined under light and judged on clarity and the strength of its blue reflection - that is what determines the final choice of stone. Silver and good natural stones get more expensive every year, so a ring at this price and this quality is a sensible choice today. The metal is refined European silver 925, free of nickel and other harmful additives, so wearing it does not cause allergies or skin irritation. The rhodium layer protects the silver from tarnishing and losing its shine, so the ring keeps its bright, even lustre for a long time. The metal bears a maker's mark registered with the French assay office, which attests to its origin.

In spring it pairs well with a pastel trench coat and a silk scarf tied loosely at the neck - the hand wearing the ring catches the eye with every gesture, whether reaching for a light-coloured bag. The cool blue of the moonstone sits well against powder pink, ecru and pale grey, the shades typical of spring styling. It is a ring that works just as well for everyday wear as for more formal occasions tied to an engagement.