Plunge into our refreshing pool of blue, from the delicate cascading light of a magnificent aquamarine statement ring to the deep blue curvaceous Chanel four-leaf-clover brooch. Our expert’s pick brings you an array of sapphires and aquamarines (not forgetting that the latter is the March birthstone), cabochons and cocktail rings. Find something new (to you), and something very blue.

Why does blue endure? To find out why blue has been the colour prized by artists, poets and writers for centuries, read 'Blue: the Colour of Heaven', by Jane Kemp, and 'Sapphire: a Hard Gemstone to Beat', by Joanna Hardy.