The two turquoise cabochons in these earrings share a uniform, saturated sky-blue colour with no shadowing or discolouration - such purity of colour is rare and catches the eye at once when worn close to the face. The smooth cabochon cut doesn't scatter light the way a facet would; instead it concentrates it on the surface of the stone, so the turquoise appears dense and even in tone. The classic stud form sits close to the earlobe, so the earrings pair well with short hair, an updo or an exposed neckline.

For these studs we chose turquoise from the Sleeping Beauty mine in Arizona, prized for its uniform, deep shade of blue without discolouration. Silver and good-quality turquoise are rising in price, and stones with such an even colour are becoming harder to find, so buying at this price makes sense today. The stones are set in refined European silver 925, coated with a layer of rhodium - this hard metal protects the surface from tarnishing and scratching, so the shine lasts long and doesn't require frequent cleaning. The alloy remains pure, free of nickel and other allergenic additives, so you can wear them without worrying about irritation. The French maker's mark struck on the piece attests the origin of the silver.

For a meeting in the city, a cool grey turtleneck and a simple trench coat bring out their best - the blue of the turquoise enlivens a neutral palette near the face, and the classic stud form doesn't distract from your hairstyle or make-up. You can also pair them with a plain shirt collar and hair tied back, so the turquoise cabochon stays fully visible. These are earrings that work equally well by day and for an evening out in the city.