Adriana Ugarte wore a ring and earrings adorned with diamond and sapphires from Chaumet's Hortensia collection. Many celebrities walked the red carpet adorned with striking jewels at the 69th annual Cannes Film Festival. Taking place May 11-22 2016, we've pulled together a selection of some of the most eye-catching pieces from this year's event, including bold ear-cuffs, ethical stones and diamonds adorned with colour.