Rainbow setting – that is, adorning a timepiece with a bevy of colourful gems – has emerged as one of the most collectible tropes in quality watchmaking. Luxury US Rolex replica watches has a rainbow-tinted history that traces back to the ’80s when it embellished the elegant Cellini models, though it was the bezel of the 2012 Cosmograph Daytona – comprising 36 trapezium-cut sapphires of different colours – that really ignited the multicoloured passion of collectors. Since then, rainbow hues have decorated a range of AAA Rolex fake watches, right up to this year’s Yacht-Master, set with cool blue and violet...