The O, X and O on the South Bank's Oxo Tower were lit up as two diamond rings and a ruby red "kiss" on Wednesday to promote Coutts London Jewellery Week.
Taking place from 11 to 15 June, the first ever Coutts London Jewellery Week will showcase the UK's status as one of the world's leading centres of excellence for jewellery.
D'Argent Gallery at 1:01 showcases silver, gold and diamond ranges, particularly by Louise Sherman; Studio Fusion Gallery at 1:06 specialises in a contemporary approach to enamel and Alan Vallis' work at 2:09 shows the influence of his travels to Indonesia and Africa and his interest in diving in the Red Sea.
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