Pendientes Botón de Aguamarina en Engaste Plata de Ley 925

A clear blue stone, given room. The round aquamarine-toned cubic zirconia sits inside a smooth bezel, and the extra size here does something specific for a pale blue: the larger the facet, the more light it returns, so the colour stays bright instead of greying out at a distance. The metal closes fully around the stone, keeping the outline clean and the edges smooth. Each earring is 925 sterling silver with a post and butterfly back.

These are the summer pair, though they work perfectly well in January against a navy coat. Blue is unusual enough to be noticed and neutral enough to go with most of your wardrobe, which is a rare combination in a coloured stone. Available in gold, rose gold and silver — silver keeps the blue cool and glassy, gold warms it towards teal. Made from hypoallergenic sterling silver and finished with a closed setting that will not catch on a swimsuit strap or a towel.